This article possibly contains original research . Many of the sources do not refer to "imperialism".(August 2024) |
| History of the United States expansion and influence |
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| Colonialism |
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| Concepts |
American imperialism is the exercise of power or control by the US outside its borders. The US expanded its territory initially via conquest, later shifting to controlling/influencing other countries without conquest, using techniques such as alliances; aid; gunboat diplomacy; treaties; trade; support for preferred political factions; regime change; economic influence via private companies; and cultural influence. [1] [2]
American expansion ended in the late 19th century, with the exception of some Caribbean and Western Pacific islands. [3] While the US does not typically identify itself and its territorial possessions as an empire, commentators such as Max Boot, Arthur M. Schlesinger Jr., and Niall Ferguson have done so. [4]
US foreign interventions have been debated throughout US history. Opponents claimed that such actions were inconsistent with US beginnings as a colony that rebelled against an overseas king, as well as with American values of democracy, freedom, and independence. Conversely, American presidents who intervened militarily—most notably William McKinley, Woodrow Wilson, Theodore Roosevelt, and William Howard Taft—cited American economic interests, such as trade and debt management; preventing European intervention (colonial or otherwise) in the Western Hemisphere, (under the 1823 Monroe Doctrine); and the benefits of keeping "good order".[ citation needed ]
This section needs additional citations for verification .(October 2025) |
Following Columbus, the European and then American presence steadily expanded across what became the US, driving Native Americans out by treaty or by force, including multiple wars. Many Native American settlements were depopulated by unwittingly imported diseases, such as smallpox. Native Americans became citizens in 1924 and experience a form of tribal sovereignty.
President James Monroe promulgated his Monroe Doctrine in 1823, in order to end European interventions in Latin America. Territorial expansion was explicit in the 19th century idea of manifest destiny. The 1803 Louisiana Purchase transferred 828,000 sq mi (2,140,000 km2) of territory claimed by France to the US. Via the 1846-1848 Mexican–American War, the US annexed 525,000 sq mi (1,360,000 km2) of Mexican territory. In 1867, the Andrew Johnson administration purchased Alaska's 665,384 sq mi (1,723,340 km2) from Russia.
American foreign policy pivoted to "containing" communism during the Cold War. In accordance with the Truman Doctrine and the Reagan Doctrine, the US attempted to limit the Soviet Union and its allies. During the Vietnam War, the US's attempt to protect South Vietnam from its communist neighbor to the north and a domestic insurgency ended in failure at tremendous cost in US and Vietnamese lives and a Khmer Rouge-perpetrated genocide in neighboring Cambodia. US tactics included attempts at regime change in countries including Iran, Cuba, Panama, and Grenada, along with interference in other countries' elections.
US acquisitions on the North American continent became states, and their residents became citizens. Residents of Hawaii voted for statehood in 1959. Other island jurisdictions remain territories, namely Guam, Puerto Rico, the US Virgin Islands, American Samoa, and the Northern Mariana Islands, but their residents are also citizens. The remainder of US territories eventually became independent, including three freely associated states that participate in US government programs in exchange for military basing rights, to Cuba, which severed diplomatic relations with the US during the Cold War.
The US was a public advocate of European decolonization after World War II (completing a ten-year independence transition for its Philippines territory in 1944). The US often came in conflict with national liberation movements. [5]
In 1786 then-private citizen George Washington described the new nation as an "infant empire". [6] Then-Minister Plenipotentiary Thomas Jefferson asserted that year that the US "must be viewed as the nest from which all America, North & South is to be peopled. [...] The navigation of the Mississippi we must have". [7]
The notion of manifest destiny was a popular 19th century rationale for US expansion. [8] Discontent with British rule came in part from the Royal Proclamation of 1763, which barred settlement west of the Appalachian Mountains. [9]
The Indian Wars featured British (initially) and later US militaries battling Native American sovereign groups. [10] That sovereignty was repeatedly undermined by US state policy (usually involving unequal or broken treaties) and the ever-expanding settlements. [11] Following the Dawes Act of 1887, Native American systems of land tenure ended in favor of private property. [12] This resulted in the loss of some 100 million acres of land from 1887 to 1934.[ citation needed ]
In the 1786-1795 Northwest Indian War the US fought the Northwestern Confederacy over land around the Great Lakes. Treaties such as the Treaty of Greenville and the Treaty of Fort Wayne drove anti-US sentiment among Native Americans in the region, leading to Tecumseh's Confederacy, defeated during the War of 1812.
The Indian Removal Act of 1830 culminated in the relocation of 60,000 Native Americans West of the Mississippi river in an event known as the Trail of Tears, killing 16,700. [13]
In the 1846-1849 Mexican–American War, the US conquered Mexican territory reaching from Texas to the Pacific coast. [14] [15]
Settlement of California accelerated, including the California genocide. Estimates of deaths vary from 2,000 [16] to 100,000. [17] The discovery of gold drew many miners and settlers who formed militias to kill and displace Native Americans. [18] The California government supported expansion and settlement through the passage of the Act for the Government and Protection of Indians which legalized the forced indenture (effectively enslavement) of Native Americans. [19] [20] Some California towns offered and paid bounties for the killing of Native Americans. [21]
American expansion in the Great Plains spurred conflict between many western tribes and the US. The 1851 Treaty of Fort Laramie gave the Cheyenne and Arapaho tribes territory from the North Platte River in present-day Wyoming and Nebraska southward to the Arkansas River in what became Colorado and Kansas. The land was initially not wanted by settlers, but following the discovery of gold in the region, settlers came in volume. In 1861, six chiefs of the Southern Cheyenne and four of the Arapaho signed the Treaty of Fort Wise, surrendering 90% of their land. [22] The refusal of various warriors to recognize the treaty led settlers to expect war. The subsequent Colorado War included the Sand Creek Massacre in which up to 600 Cheyenne were killed, mostly children and women. On October 14, 1865, the chiefs of what remained of the Southern Cheyenne and Arapahos agreed to move south of the Arkansas, sharing land that belonged to the Kiowas, [23] and thereby relinquished all claims in Colorado territory.
Following Red Cloud's victory in Red Cloud's War, the Treaty of Fort Laramie was signed. This treaty led to the creation of the Great Sioux Reservation. However, the discovery of gold in the Black Hills resulted in a settlement surge. The gold rush was profitable for settlers and the government: the Black Hill Mine produced $500 million in gold. [24] Attempts to purchase the land failed, triggering the Great Sioux War. Despite initial success by Native American forces, most notably the Battle of the Little Bighorn, the government won and carved the reservation into smaller tracts. [25]
In the southwest, settlers waged war against native tribes. [26] By 1871, Tucson had a population of three thousand, including "saloon-keepers, traders and contractors who had profited during the Civil War". In the Camp Grant Massacre of 1871, up to 144 Apache were killed, mostly women and children. Up to 27 Apache children were captured and sold by Christianized Papago Indians into slavery in Mexico. [27] In the 1860s, the Navajo faced deportation, which became known as the Long Walk of the Navajo. The journey started in spring 1864. Navajo led by the US Army were relocated from eastern Arizona Territory and western New Mexico Territory to Fort Sumner. Around 200 died during the walk. New Mexican slavers, assisted by Utes, attacked isolated bands, killing the men, taking the women and children, and capturing horses and livestock. As part of these raids, Navajo were sold throughout the region. [28]
In 1820, the private American Colonization Society began subsidizing free black Americans to colonize the west coast of Africa. In 1822, it established the colony of Liberia, which became independent in 1847. By 1857, Liberia had merged with colonies formed by other societies, including the Republic of Maryland, Mississippi-in-Africa, and Kentucky in Africa. [29]
In older historiography mercenary William Walker's attempts to create private colonies epitomized antebellum American imperialism. His brief seizure of Nicaragua in 1855 followed his attempt to expand slavery into Central America and establish colonies in Mexico. Walker failed in his escapades and never had US backing. Historian Michel Gobat claimed that Walker was invited by Nicaraguan liberals seeking modernization and liberalism. Walker's government included those liberals, as well as Yankee colonizers and European radicals. [30]
In the late 19th century, Great Britain, France, Germany and Belgium rapidly expanded their territorial possessions, particularly in Africa. The US expanded also, annexing Pacific Islands such as Hawaii.
As Assistant Secretary of the Navy, Theodore Roosevelt was instrumental in preparing for the Spanish–American War [32] and was an enthusiastic proponent of testing the US military in battle, at one point stating "I should welcome almost any war, for I think this country needs one." [33] [34] [35] Roosevelt rejected imperialism, but embraced expansionism. [36] Rudyard Kipling wrote the poem "The White Man's Burden" for Roosevelt, who told colleagues that it was "rather poor poetry, but good sense from the expansion point of view". [37] Roosevelt proclaimed what became the Roosevelt Corollary to the Monroe Doctrine (in turn replaced by Herbert Hoover's endorsement of the Clark Memorandum).
One causal factor was racism, evidenced by philosopher Fiske's belief in "Anglo-Saxon" racial superiority and clergyman Strong's call to "civilize and Christianize" other peoples. The concepts were related to Social Darwinism in some schools of American thought. [38] [39] [40]
Industry and trade were other justifications. American intervention in Latin America and Hawaii supported investments, including sugar, pineapple, and bananas. When the US annexed a territory, it achieved trade access there. In 1898, Senator Albert Beveridge claimed that market expansion was necessary, writing "American factories are making more than the American people can use; American soil is producing more than they can consume. Fate has written our policy for us; the trade of the world must and shall be ours." [41] [42]
The US claimed to intervene in Cuba in the name of freedom: "We are coming, Cuba, coming; we are bound to set you free! We are coming from the mountains, from the plains and inland sea! We are coming with the wrath of God to make the Spaniards flee! "(lyrics to "Cuba Libre", 1898). Cuba became independent in 1898 following the Spanish–American War. [43] However, from 1898 until the Cuban revolution, the US directly influenced the Cuban economy. By 1906, up to 15% of Cuba was owned by Americans. [44]
The 1901 Platt Amendment prevented Cuba from entering into agreements with foreign nations and granted the US the right to build naval stations on Cuban soil. [43]
In 1899 Filipino revolutionary General Emilio Aguinaldo remarked: "The Filipinos fighting for Liberty, the American people fighting them to give them liberty. The two peoples are fighting on parallel lines for the same object." [45]
American rule of ceded Spanish territory was first contested in the Philippine–American War, ultimately resulting in the end of the short-lived Philippine Republic. [46] [47] [41]
After Philippine independence, the US continued to direct the country through Central Intelligence Agency (CIA) operatives such as Edward Lansdale who controlled President Ramon Magsaysay until 1948, physically beating him when the Philippine leader attempted to reject a speech the CIA had written for him.[ citation needed ] American agents drugged President Elpidio Quirino and prepared to assassinate Senator Claro Recto. [48] [49] Filipino historian Roland G. Simbulan called the CIA "US imperialism's clandestine apparatus in the Philippines". [50]
The US established dozens of military bases, including some that were large. Philippine independence was gated by American legislation. For example, the Bell Trade Act provided a mechanism whereby US import quotas could be established on Philippine goods that competed with US products. It further required US citizens and corporations be granted equal access to Philippine natural resources. [51] In 1946, Assistant Secretary of State for Economic Affairs William L. Clayton described the law as "clearly inconsistent with the basic foreign economic policy of this country" and "clearly inconsistent with our promise to grant the Philippines genuine independence." [52] Philippine independence came on July 4, 1946. [53]
In the 1800s the US became concerned that Great Britain or France might have colonial ambitions for the Hawaiian Kingdom. In 1849 the US and the Kingdom signed a friendship treaty. In 1885, King David Kalākaua, Hawaii's last king, signed a treaty with the US allowing tariff-free sugar exports to the US mainland. On July 6, 1887, the Hawaiian League, an illegal secret society, threatened the king and forced him to enact a new constitution that stripped him of much of his power. King Kalākaua died in 1891 and was succeeded by his sister Queen Lili'uokalani. In 1893 with support from marines from the USS Boston, the Queen was deposed in a bloodless coup. Hawaii became a US territory and later became the 50th US state in 1959.
Congress' procedure for annexing territory was explained in an 1898 report by the Senate Foreign Relations Committee in the context of Hawaii: "If, in the judgment of Congress, such a measure is supported by a safe and wise policy, or is based upon a natural duty that we owe to the people of Hawaii, or is necessary for our national development and security, that is enough to justify annexation, with the consent of the recognized government of the country to be annexed." [54]
President Woodrow Wilson launched seven overseas armed interventions (Nicaragua, the Dominican Republic, Haiti, Cuba, Panama, Mexico and Honduras), [55] more than any other president. [56] General Smedley Butler, the most-decorated Marine of that era, considered virtually all of the operations to have been economically motivated. [57] In a 1933 speech he averred:
I was a racketeer, a gangster for capitalism. I suspected I was just part of a racket at the time. Now I am sure of it...I helped make Mexico, especially Tampico, safe for American oil interests in 1914. I helped make Haiti and Cuba a decent place for the National City Bank boys to collect revenues in. I helped in the raping of half a dozen Central American republics for the benefits of Wall Street ... Looking back on it, I feel that I could have given Al Capone a few hints. The best he could do was to operate his racket in three districts. I operated on three continents. [58]
The US invaded Haiti on July 28, 1915, and administered it until 1934. [59] Haiti had been independent before the intervention. The Haitian government agreed to US terms, including American oversight. view
By the 1930s, Standard Oil of California (SOCAL) had made a series of acquisitions, which achieved decades-long control over Saudi oil. [60]
At the start of World War II, the US administered multiple Pacific territories. The majority of these territories hosted military bases, such as Midway, Guam, Wake Island, and Hawaii. Japan's surprise attack on Pearl Harbor brought the US into the war. Japan occupied Guam, Wake Island, and other American territories. By early 1942 Japan had conquered the Philippines. Many battles were needed to retake allied territory and other Japanese-occupied territories. The US liberated the Philippines; Japanese troops surrendered in August 1945. The maximum extension of American direct control came after the war, and included the occupations of Germany and Austria in May and Japan and Korea in September 1945.
The US began planning for the post-war world at the war's outset. This vision originated in the Council on Foreign Relations (CFR), an economic organization that worked closely with government leaders. CFR's War and Peace Studies group offered its services to the State Department in 1939 and a secret partnership developed. CFR leaders Hamilton Fish Armstrong and Walter H. Mallory saw World War II as a "grand opportunity" for the US to emerge as "the premier power in the world". [61]
In an October 1940 report to Roosevelt, geographer Isaiah Bowman, a key liaison between the CFR and the State Department, wrote, "...the US government is interested in any solution anywhere in the world that affects American trade. In a wide sense, commerce is the mother of all wars." In 1942 this economic globalism was articulated as the "Grand Area" concept in secret documents. Under that policy the US would have sought control over the "Western Hemisphere, Continental Europe and Mediterranean Basin (excluding Russia), the Pacific Area and the Far East, and the British Empire (excluding Canada)." The Grand Area encompassed all known major oil-bearing areas outside the Soviet Union. [62]
Bowman's "American economic Lebensraum " (lebensraum is a German word advanced by the Nazis as one reason for conquering Europe):
Better than the American Century or the Pax Americana, the notion of an American Lebensraum captures the specific and global historical geography of U.S. ascension to power. After World War II, global power would no longer be measured in terms of colonized land or power over territory. Rather, global power was measured in directly economic terms. Trade and markets now figured as the economic nexuses of global power, a shift confirmed in the 1944 Bretton Woods agreement, which not only inaugurated an international currency system but also established two central banking institutions—the International Monetary Fund and the World Bank—to oversee the global economy. These represented the first planks of the economic infrastructure of the postwar American Lebensraum. [61]
Prior to his death in 1945, President Roosevelt was planning to withdraw all US forces from Europe. Soviet actions in Poland and Czechoslovakia led his successor Harry Truman to reconsider. Heavily influenced by George Kennan, Washington policymakers decided that the Soviet Union was an expansionary dictatorship that threatened the free world. In their view, Moscow's weakness was that it had to keep expanding to survive; and that, by containing or stopping its growth, European stability could be achieved. The result was the Truman Doctrine (1947). Initially regarding only Greece and Turkey, NSC-68 (1951) extended it to the entire non-Communist world. [63] Thus, the Truman Doctrine was described as globalizing the Monroe Doctrine. [64] [65] : 1186
A second consideration was the need to restore the world economy, which required rebuilding Europe and Japan. This was the main rationale for the 1948 Marshall Plan.
Europe’s requirements for the next three or four years of foreign food and other essential products... are so much greater than her present ability to pay that she must have substantial additional help or face economic, social, and political deterioration of a very grave character. [66]
A third factor was the acceptance, especially by Britain and Benelux, that American military involvement was needed to contain the USSR.[ citation needed ]
American involvement in Panama began as a result of its interest in building a canal there, and led to its support for Panamanian independence (from Columbia) in 1903. [67] The US funded the construction and maintained ownership of the Panama Canal Zone until President Carter ceded it to Panama as of the end of 1999. [68] After an attack on the US Embassy in mid-1987, the indictment of Manuel Noriega on drug charges, and Noriega's annulment of the 1989 election (alleging US fraud), the US invaded and deposed and arrested him, withdrawing its forces the following month. [69] Some of the ports on either end of the canal were then purchased by Chinese company Hutchison Whampoa, [70] before Black Rock purchased the rights following President Trump's objections to its continued ownership. [71]
Following the Guatemalan Revolution, Guatemala expanded labor rights and land reforms that granted property to landless peasants. [72] Lobbying by the United Fruit Company, whose profits were damaged by these policies, as well as fear of Communist influence, culminated in US support for Operation PBFortune to overthrow Guatemalan President Jacobo Árbenz in 1952. The US provided weapons to exiled Guatemalan military officer Carlos Castillo Armas, who was to lead an invasion from Nicaragua. [73] This culminated in the 1954 Guatemalan coup d'état. The subsequent military junta assumed dictatorial powers, banned opposition parties and reversed the social reforms. After the coup, American influence grew in the country, in the government and the economy. [74] The US continued to support Guatemala throughout the Cold War, including during the Guatemalan genocide in which up to 200,000 people were killed. [75]
On March 15, 1951, the Iranian parliament passed legislation proposed by Mohammad Mosaddegh to nationalize the Anglo-Persian Oil Company, whose revenues from Iranian oil were greater than the Iranian government budget. Mosaddegh was elected Prime Minister by the Majlis. Mosadeggh's support by the Tudeh as well as a boycott by various businesses against the nationalized industry produced fears in the UK and the US that Iran would turn to Communism. America officially remained neutral, but the CIA covertly supported various candidates in the 1952 Iranian legislative election. [76]
In late 1952, with Mosaddegh in power, the CIA launched a coup via Operation Ajax with UK support. [77] [78] [79] The coup increased the monarchy's power. In the aftermath of the coup, Shah Reza Pahlavi replaced the Anglo-Iranian Oil Company with a consortium—British Petroleum and eight European and American oil companies. In 1979, the Iranian Revolution ended the rule of the Shah and American influence in the country. In August 2013, the US formally acknowledged its role in the coup, including bribing Iranian politicians, security, and army officials, as well as pro-coup propaganda. [80]
The US occupied Japan after WWII until 1952, and maintained control of Okinawa Prefecture until 1972, before returning control to Japan. [81]
After Japan surrendered the land they had ruled since 1910, the US and the USSR divided the Korean peninsula along the 38th parallel, with the Southern end occupied by the US and the Northern end by the USSR. The two countries agreed to grant Korean independence in 1950. Kim Ku and Syngman Rhee led the anti-trusteeship movement against the US and the USSR. [82] [83] The USAMGIK banned strikes on December 8 and outlawed the PRK Revolutionary Government and People's Committees on December 12. [84] Following further unrest, the USAMGIK declared martial law. [85] The UN decided to hold an election to create an independent Korea. The Soviets and Korean communists refused to participate. Due to concerns about division caused by an election without North Korea's participation, many South Korean politicians boycotted it. [86] [87] The 1948 South Korean general election was held in May. [88] The resultant South Korean government promulgated a national political constitution on July 17 and elected Rhee as president. The Republic of Korea (South Korea) was established on August 15. The 1948 Jeju uprising was violently suppressed and led to the deaths of 14,000-30,000 people, mostly civilians. [89] [90] [91] [92] : 139, 193 The North invaded the South in June 1950, launching the bloody Korean War that killed millions of Koreans. [93] [94] Based on National Security Council document 68, the US adopted a policy of "rollback" against communism in Asia. [95]
The US initially supported France's counterinsurgency program, but not its continued rule. US support was in response to China's support for Vietnam's communists. After Điện Biên Phủ, the US pressured France to free the pro-French government. [96] The US assumed military and financial support for South Vietnam following France's defeat in the First Indochina War. The US and South Vietnam refused to sign agreements at the 1954 Geneva Conference arguing that fair elections weren't possible in North Vietnam. [97] [98] Beginning in 1965, the US sent forces to protect the South from invasions by the North and local insurgencies. In part the Vietnam War was a proxy war between the USSR and the US. [99] The Paris Peace accords triggered the departure of US troops by March 1973, while 150,000-200,000 Northern soldiers remained in the South in violation of the accords. Peace continued until the US slashed aid to the South by 70% in 1974. The North launched its final offensive in March 1975, and Saigon fell on April 30. [100]
From 1968 through 1989, the US supported attempts to defeat left-wing insurgencies and governments. It supported political repression and state terrorism including intelligence operations, coup d'états, and assassinations as part of Operation Condor. [101] [102] [103] [104] It began in November 1975, led by the dictatorships of the Southern Cone of South America in Argentina, Bolivia, Brazil, Chile, Ecuador, Paraguay, Peru, and Uruguay. [105]
In 1991 the US and allies invaded Iraq to force it to withdraw from Kuwait, which Iraq had conquered the year before. The Gulf War lasted 9 days before the two parties accepted a ceasefire and Iraq withdrew its forces. The Bush Administration noted that possession of Kuwait would give Iraq control of 45% of global oil production. [106] [107] While the US gained no direct control of territory or (oil or other) assets, it strengthened relations with Kuwait and neighboring countries (save for Iran). The US established no-fly zones over Iraq following the conflict, with the announced purpose of protecting Iraqi Kurds in the north and Shia Muslims in the south. [108]
The US invaded Iraq again in 2003 in the aftermath of 9/11. One outcome of Iraq's rapid defeat was Order 39, which privatized the Iraqi economy and permitted 100% foreign ownership of Iraqi assets. [109] International oil companies from the US, Europe, and China secured technical service contracts (but not ownership of reserves) starting in 2009, and invested billions of dollars that increased production from ~1.5 million barrels per day (mb/d) in 2003 to ~4.6 mb/d by 2023. 75%+ of the resulting revenues went to the Iraqi National Oil Company. [110]
In 2011, as part of the Arab Spring, protests erupted in Libya against Muammar Gaddafi, which soon spiraled into civil war. A NATO-led military coalition intervened to implement United Nations Security Council Resolution 1973. While the effort was initially largely led by France and the UK, command was shared with the US, as part of Operation Odyssey Dawn. According to the Libyan Health Ministry, the attacks killed 114 and wounded 445 civilians. [111]
Shortly after the start of the civil war in 2011, the Obama administration placed sanctions against Syria and supported the Free Syrian Army rebel faction by covertly authorizing operation Timber Sycamore under which the CIA armed and trained and armed nearly 10,000 rebel fighters at a cost of $1 billion a year. [112] [113]
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President of the United States Donald Trump has proposed various plans and ideas that would expand the United States' political influence and territory. [114] In his second inaugural address, Trump directly referenced potential territorial expansion, and became the first U.S. president to use the phrase manifest destiny during an inaugural address. [115] [116] The last territory acquired by the United States came in 1947 with the acquisition of the Northern Mariana Islands, Caroline, and Marshall Islands. Of these islands, only the Northern Mariana Islands would become a U.S. territory, with the others becoming independent in the 1980s and 1990s under Compacts of Free Association.
Trump first said he wanted to annex Greenland in 2019, during his first term. Since being elected to a second term in 2024, Trump has also shown a desire to annex Canada and the Panama Canal. He has also suggested invading Venezuela, annexing Mexico, taking over the Gaza Strip, and influencing the direction of the Catholic Church. Trump's determination to treat the Western Hemisphere as a U.S. sphere of influence has been characterized as a revival of the Monroe Doctrine and with the presidential proclamation and release of the 2025 National Security Strategy document in December 2025 has officially been outlined by the Trump administration with the announcement of the "Trump Corollary" to the Monroe Doctrine. [117] [118]
According to a February 2025 poll by YouGov, only 4% of Americans support American expansion if it requires military force, 33% of Americans support expansion without the use of military or economic force, and 48% of Americans oppose expansion altogether. [119]
Kennan designed in 1948 a globe-circling system of alliances embracing non-Communist countries. [120] Disregarding George Washington's dictum of avoiding entangling alliances, in the early Cold War the US established 44 formal alliances and other relationships with nearly 100 countries. [121] The enthusiasm was reciprocal. Most of the world was interested to ally with the US. In the early 1940s, observing the attitudes of other nations, Isaiah Bowman, [122] Henry Luce, [123] and Wendell Willkie [124] stressed the potential of such relationships. This unprecedented scale was aided by the eagerness with which America was welcomed. [125]
On the eve of the Rio Treaty and NATO, political theorist James Burnham envisaged:
A federation however in which the federal units are not equal, in which one of them leads ... and holds the decisive instrument of material power, is in reality an empire. The word ... would in practice doubtless never be employed. Whatever the words, it is well also to know the reality. In reality, the only alternative to the Communist World Empire is an American Empire which will be, if not literally worldwide in formal boundaries, capable of exercising decisive world control. [126]
Zbigniew Brzezinski listed three goals of US geostrategy: "to prevent collusion and maintain security dependence among the vassals, to keep tributaries pliant and protected and to keep the barbarians from coming together." [127] Toynbee [128] and Ostrovsky [129] associated US alliances with the Roman client system during the late Roman Republic. Cicero defended the strategy, claiming that by defending its allies, Rome gained world dominion. [130]
However, American influence was largely welcomed. [131] [132] [133] Ostrovsky claimed that although all earlier empires, especially persistent empires, were in some measure by bargain, cooperation and invitation, in the post-1945 world this took an extreme form. [134] In 1989, political scientist Huntington stated that most democratic states entered "hegemonic" alliances, [135] while Krauthammer stated that "[Western] Europe achieved the single greatest transfer of sovereignty in world history", [136] : 49 as Eastern Europe followed suit.
Russell theorized about the "military unification of the world" led by the Anglo-American powers. [137]
Since President Dwight Eisenhower, US administrations claimed that the US carried a disproportionate share of the military and financial burden for maintaining NATO. In 2025, President Trump announced that he wanted NATO countries to raise their contributions from 2 to 5% of their respective GDPs, [138] to which they later agreed. [139] The Trump administration also pushed allies and others over trade and investment, a shift from decades of advocating free trade and the rule of law. Trump made (possibly chimerical) territorial claims on Greenland and Canada. [140] Canada and others engaged in designing an anti-hegemonic "common front" with the Europeans, particularly with Denmark, and Latin America, particularly Mexico and Panama. [141] [142] [143]
During World War II, Roosevelt promised that the American eagle will "fly high and strike hard." "But he can only do so if he has safe perches around the world." [147] [148] After the war, the US established a network of bases. NCS-162/2 of 1953 stated, "The military striking power necessary to retaliate depends for the foreseeable future on having bases in allied countries." [149] : 349 No foreign bases were present on US soil. [150]
In his New Frontier speech in 1960, future President John F. Kennedy noted that America had established "frontiers" on every continent. [151] : 71 On Guam, a common joke had it that few people other than Kremlin nuclear targeters knew about their island. [152]
While territories such as Guam, the US Virgin Islands, the Northern Mariana Islands, American Samoa, and Puerto Rico are US territories, the US supported independence for many one-time territories. Examples include the Philippines (1946), the Panama Canal Zone (1979), Palau (1981), the Federated States of Micronesia (1986), and the Marshall Islands (1986). Most of them continued to host US bases. In 2003, the US had bases in over 36 countries, [153] The US operates a base in Guantánamo Bay, Cuba, despite the country's objections. [154]
As of 2024, the US deployed approximately 160,000 active-duty personnel outside the US and its territories. [155] In 2015 the Department of Defense reported that its bases numbered 587, [156] while an independent look reported 800, including 174 in Germany, 113 in Japan, and 83 in South Korea. Some bases, such as Rammstein Air Base, are city-sized, with schools, hospitals and power plants. [157] [150]
The US network of military alliances and bases is coordinated by the Unified combatant command (UCC). [158] [159] [ better source needed ] [160] The UCC system is rooted in WWII. The UCC was founded to contain the USSR, but outlived it and expanded. As of 2025, the US operated six geographic commands. [161] : 69
Dick Cheney served as Secretary of Defense during the end of the Cold War, and afterwards recommended, "The strategic command, control and communication system should continue to evolve toward a joint global structure..." [162] In 1998, the US assigned Russia, the former Soviet Republics and its former satellite states in Europe to EUCOM and those of the Central Asia to CENTCOM. [161]
In 2002, for the first time, the US divided the entire Earth among US commands. The final unassigned region—Antarctica—fell to PACOM, which included the half of the globe covered by the Pacific Ocean.
No other nation has anything approaching the US network of overseas bases, forward deployed forces and military relationships. [163]
US cultural exports have dominated key cultural sectors since the advent of movies in the early 20th century. The US introduced many new cultural sectors, and at least initially dominated them. US cultural products (video, video games, music, literature, science, fashion) typically spread ideas of individualism, innovation, and consumerism, often welcomed as modern/aspirational. In 2025 their share varied by medium and region. As of 2025: [164]
However, US cultural dominance is waning, as other cultures increase consumption (Bollywood, Reggaeton) and exports (K-pop, anime/manga) of their own products.
In territories such as Hawaii, missionaries dedicated themselves to converting locals to Christianity and teaching them English (while creating a written form of the Hawaiian language). In the 19th century the indigenous dance culture of Hula was banned. for a time. In 1896 territorial authorities eliminated Hawaiian from schools. [164] The 1970s Hawaiian Renaissance restored Hawaiian culture across many institutions.
The art and media that emerged in the 1800s was often concerned with westward expansion.
The Hudson River School was a romantic-inspired art movement that formed in 1826 that depicted landscapes and natural scenes. These paintings admired the marvels of American territory and portrayed the US as a promised land. [165] Common themes included: discovery; exploration; settlement and promise.
These themes resurfaced in other artistic expression of the time. John Gast, known for his 1872 painting American Progress, displayed themes of discovery and the beneficial prospects of American expansion. [166] Manifest destiny appeared in some art of the time. Art was also used to justify the belief that the new nation was inevitably destined to grow. [167]
American exceptionalism is the belief that the US is unique among nations based on its values, political system, and historical development. [168] De Tocqueville was the first to identify the US as qualitatively unique. Reagan notably celebrated US exceptionalism, tying it to Winthrop's "city on a hill" sermon. [169] One facet of that exceptionalism is America's self concept as a protector of freedom, democracy, and free markets. [170]
The arms industry, petroleum, and finance industries, in alliance with military and political bureaucracies. have been accused of benefiting from war profiteering and exploiting natural resources. [171] The US ($5.3T) was second to China ($6.2T) in world trade (2024). [172] The US dominated arms exports, although this represented less than 15% of its export total.
A key role for the US military is to protect trade routes, with spillover benefits to other trade-dependent nations such as China. For example, the Strait of Malacca is the main shipping route between the Indian and Pacific Oceans and has at times faced piracy. [173] It carries nearly 100,000 ships/year. [174]
An older argument that the Global North (Europe, Japan, Canada, and the US) had arrayed itself against the Global South became less salient as more of the latter countries began exporting significant amounts of industrial goods, such as airplanes (Brazil), electronics (Vietnam), vehicles (India), and container ships (China). [175]
The advent of nuclear weapons led multiple US administrations to discount the effectiveness of the oceanic moat that had made invading the US impractical for the world's other powerful, later ballistic missile/nuclear, nations. Presidents Truman, [176] Kennedy, [177] and Clinton [178] accepted this conclusion. Thus they sought other means to ensure national security.
One facet of this was to prevent the Eurasian land mass from coming under control of any single power or combination of powers. [179] [180] [181] [127] However, this containment strategy, designed for the Cold War, long outlived it. [182]
In 2005, the US Army War College initiated a study of empires. It classed the American Empire as accidental and defensive (rather than intentional and aggressive), driven by the need for defense against Soviet Communism. [183] In the process the US acquired enormous influence, but did not do so deliberately. [184] : XXIV
September 11 created a security crisis that triggered intervention, [6] : 3 accompanied by heated debates. It was the first significant attack on American soil since Pearl Harbor (the 1993 bombing led by Pakistani terrorist Ramzi Yousef did not do enough damage to trigger a major response). [185]
The extent to which US actions are properly described as imperialism and the US as an empire have been debated since the country's founding, complicated by the lack of standard definitions of the terms and their applicability to the rapidly evolving ways in which nations form and interact.
Annexation is the traditional way empires expand. The US expanded westward via repeated annexations, conquests, and purchases of lands claimed by other nations. The last time the US annexed territory was the Philippines in 1899, then a Spanish colony. Thereafter, the US limited itself to other means.
Historian Immerwahr considered American territorial expansion across North America at the expense of Native Americans to fit the definition of imperialism. [186]
In 1980 Williams claimed that prosperity, liberty and security were merely justifications for imperial behavior. [187]
Author Miller stated that the public's sense of innocence limited popular recognition of US imperial conduct. [188]
Historian LaFeber saw the Spanish-American War as a culmination of US westward expansion. [189]
In 1988 linguist/activist Chomsky argued systematic propaganda had been used to establish support for the concept of exceptionalism and provide alternative descriptions of what he viewed as imperialism. [190] In 2008 he stated, "the US is the one country...that was founded as an empire explicitly". [191] [192]
Historians such as Meinig (1993) [193] and Beard [ citation needed ] considered the US' entire westward expansion to be imperialism. By contrast, in 1999 Buchanan, a pundit, contrasted the US' later drive to empire with the earlier expansion. [194]
Historian Bacevich argued in 2004 that the US had not fundamentally changed its foreign policy following the Cold War, and continued to attempt to expand its span of control. [195]
David Hendrickson claimed that absolute security implies universal empire. [196]
Chalmers Johnson claimed in 2004 that America's version of the colony was the military base, despite the reduced footprint that the bases provide. [197] He argued that the resistance to occupying foreign territory led to other means, including governing other countries via surrogates or puppet regimes, where domestically unpopular governments survived only through US support. [198]
After September 11 criticisms also continued, as geographer Neil Smith called the official war on terror a third attempt at empire. [61] : XI–XII
Petrodollar warfare (coined by William R. Clark) or oil currency war refers to the alleged US foreign policy of preserving by force the status of the US dollar as the world's reserve currency and as the currency in which oil is priced. Clark cited the 2003 Iraq invasion, 2011 intervention in Libya, and use of force against Iran as examples. [200]
Paul Kramer noted the resemblance between US policies in the Philippines and European actions in their colonies in Asia and Africa during this period. [201]
Historian Lundestad claimed that the US interfered in Italian and French politics in order to defeat elected communist officials. [202]
Matteo Capasso claimed that the 2011 military intervention in Libya was US-led imperialism and the conclusion of a war begun in the 1970s, fought via "gunboat diplomacy, military bombings, international sanctions and arbitrary use of international law". Capasso argued that the war was intended to strip Libya of its autonomy and resources and weaken and fragment the African/Arab political position. [203]
Educator Kieh claimed that strategic factors such as a fear of subsequent invasion of Saudi Arabia and other local pro-American monarchies drove the US response in the Gulf War. Iraqi control was feared to threaten a major corridor of international trade. Kieh also noted various economic factors. [106]
William Robinson claimed that the US was aiding transnational capitalist groups, a form of economic imperialism. He claimed that the goal was economic subjugation.[ citation needed ]
Historian Kennedy asserted, "From the time the first settlers arrived in Virginia from England and started moving westward, this was an imperial nation, a conquering nation." [204]
Sociologist Robinson characterized American empire since the 1980s as a front for the imperial designs of the American capitalist class, arguing that Washington D.C. had become the seat of the 'empire of capital' from which nations are colonized and re-colonized. [109]
Following the September 11 attack, the conversation about "American empire" shifted from decrying US overseas actions as imperial. Instead, multiple authors started to call for the US to explicitly seek imperial power. [205] Historian Maier stated that it had become acceptable to ask whether the US had become a conventional empire. [206] Ferguson noted that post-9/11, various commentators had started using the term "American empire" ambivalently or positively. [207] : pp. 3–4 He concluded that US military and economic power had elevated the US into history's most powerful empire. He supported this, claiming that it worked to promote global economic growth, enhance the rule of law and promote representative government, while fearing that the US lacked the long-term commitment to maintain it. [207]
Boot advocated for the US to explicitly seek empire. [208] Journalist Lowry recommended "low-grade colonialism" to topple dangerous regimes beyond Afghanistan. [209] The phrase "American empire" appeared more than 1000 times in news stories from November 2002 – April 2003. [210] Academic publications also surged. [211] : 222 In 2005, two notable journals, History and Theory and Daedalus , each devoted a special issue to empires.
Historian Hopkins argued that traditional economic imperialism was obsolete, noting that major oil companies opposed the 2003 US invasion of Iraq. Instead, anxieties about globalization were driving support for US interventions. [212] [213] : 95
Boot located the beginning of US imperialism to "at least 1803", claiming, "US imperialism has been the greatest force for good in the world during the past century. It has defeated communism and Nazism and has intervened against the Taliban and Serbian ethnic cleansing." [214] [215] Other neoconservatives, such as British historian Paul Johnson and writers D'Souza and Steyn and some liberal hawks, such as political scientists Zbigniew Brzezinski and Michael Ignatieff have supported it. [216]
Ferguson stated, "the US is an empire and [...] this might not be wholly bad." [207] : 21 He cited parallels between the British Empire and the US in the late 20th and early 21st centuries, though he likens the US more to the Roman Empire. Ferguson argues that these empires had both positive and negative aspects, and that if it continues to learn from history, the US' positives will far outweigh the negatives. [207] : 286–301
Rosen defined an empire as a political unit that has overwhelming military superiority and uses that power to control the internal behavior of other states. Because the US did not govern or control others' territory, he termed it an "indirect" empire. [217]
On April 28, 2003 then-Secretary of Defense Donald Rumsfeld stated, "We don't seek empires. We're not imperialistic. We never have been." [218] Many –perhaps most –scholars[ who? ] claim that the US lacks the essentials of an empire. For example, while despite American military bases around the world, America does not rule those countries, and the US government does not send out governors or permanent settlers like all the historic empires did. [219] Historian Maier says the traditional understanding of "empire" does not apply, because the US does not exert formal control over other nations or engage in systematic conquest. He advanced the term "hegemon" instead. Its enormous influence through high technology, economic power, and impact on popular culture gives it an international outreach that stands in sharp contrast to the inward direction of historic empires. [220] [221]
Historian Pagden stated that America's unmatched military capability did not demonstrate that it is imperial. Unlike European empires, it has no significant settler populations in its overseas territories and exercises no direct rule anywhere else. It reliably attempts to leave when circumstances permit, [222] : p 52–53 as in Iraq in 20011 [222] and Afghanistan in 2021 after withdrawing most of its forces in 2014. [223]
Historian Bemis argued that Spanish–American War expansionism was an "aberration", different than that of earlier American history. [224]
Historian Mary Renda claimed that the goal was to create political stability, rather than expansion or exploitation. [225]
Geographer Harvey argued that three empires had emerged by the twenty-first century, based on geographical blocs and unequal development. [226] He named the US, the European Union, and Asia (China and Russia) as the imperial blocs, [227] [ verification needed ] [228] but did not include the Iranian version. [229] This 'new' imperialism align the interests of business and politicians, preventing the rise of economic and political rivals. [230]
Thorton claimed that the term had been widely abused, writing, "imperialism is more often the name of the emotion that reacts to a series of events than a definition" of them". [231] Liberal internationalists argued that even though the post-Cold War era was dominated by the US, that dominance was not imperial. International relations scholar Ikenberry claimed that international institutions had taken the place of empire. [232]
Walzer claimed that hegemony is a better term than empire to describe the US, [233] as its dominates external relations, but not internal affairs. [234] Keohane rejected word 'empire' for the US, because it conflated it with the territorial British and Soviet empires, [235] : 435 also preferring hegomony or hegemonic stability.
Nexon and Wright claimed that neither 'empire' nor 'hegemony' properly describes foreign relations of the US. They concluded that US foreign relations has moved away from imperialism. [236] : 266–267
Scholars such as Layne, Art, Lundestad, and Tunander claimed that they were instruments through which the US perpetuated its "hegemonic" role. [237] [238] [239] [240] Before he predicted the Clash of Civilizations, Huntington had concluded that since 1945 most democratic countries had become members of the "alliance system" within which the "position of the US was 'hegemonic'". [135]
According to Ostrovsky, the pattern known as "defensive imperialism" in Roman studies [241] [242] [243] may apply to the US. It involved isolationism via geographic barriers followed by growing imperialism in response to growing external threats. [244]
Kaplan draws parallels between the US bases and Roman garrisons that were established to defend the frontiers and for surveillance of the areas beyond. [245] Ostrovsky and Falk saw it differently: "This time there are no frontiers and no areas beyond. The global strategic reach is unprecedented in world history." [134] : 233 "The US is by circumstance and design an emerging global empire, the first in the history of the world." [246] Kagan inscribed over a map of US bases: "The Sun never sets." an ironic commentary on a common description of the 19th century British Empire. [247]
Ostrovsky concluded that, disregarding national pride, many states, some of them recent great powers, "surrender their strategic sovereignty en mass[sic]". [134] They hosted US bases, partly covered their expenses, [248] : 938–939, 942 [249] integrated their strategic forces, [250] [251] [252] contributed 1-2% of their GDP, and tipped military, economic and humanitarian contributions in aid of the hegemonic operations worldwide. [253] [248] : 938, 942, 960 [254] [255] : 8 Unlike economic globalization, Ostrovsky claimed that military globalization involved centralization—integration under a central command. [134] : 299
Lebow, Kelly, Robinson, and Münkler drew parallels between NATO and the Delian League, which evolved into the Athenian Empire. [256] : p 45-46 [257] [258] : 163
According to political scientist Waltz, US alliances do not match the Westphalian system that was characterized by balance of power, equal relations among states, [259] and impermanence. [260] [261]
Historians Preston and Rossinow claimed that while the Monroe Doctrine contained a commitment to resist European colonialism, it included no limiting principles on US action. Sexton stated that the tactics implementing the doctrine were modeled after those employed by European imperial powers during the 17th and 18th centuries. [262]
Despite disagreements about Manifest Destiny's validity at the time, O'Sullivan had stumbled on a broadly held national sentiment. Although it became a rallying cry as well as a rationale for the foreign policy that reached its culmination in 1845–46, the attitude behind Manifest Destiny had long been a part of the American experience.
The foremost of these critics is Gary Clayton Anderson, a professor at the University of Oklahoma. Anderson insists that what happened to Native Americans during colonization was ethnic cleansing, not genocide. "If we get to the point where the mass murder of 50 Indians in California is considered genocide, then genocide has no more meaning," he says. Anderson tells me that, by his estimate, no more than 2,000 Native Americans were killed in California.
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lebensraum.
The U.S. played a very powerful and direct role in the life of this institution, the army, that went on to commit genocide.
{{cite web}}: Missing or empty |url= (help)(Source is blacklisted)If this American expansion created what we could call an American empire, this was to a large extent an empire by invitation...In semi-occupied Italy the State Department and Ambassador James Dunn in particular actively encouraged the non-communists to break with the communists and undoubtedly contributed to the latter being thrown out of the government in May 1947. In more normal France the American role was more restrained when the Ramadier government threw out its communists at about the same time. After the communists were out, Washington worked actively, through overt as well as covert activities, to isolate them as well as leftist socialists... US economic assistance was normally given with several strings attached.