Slavery in medieval Europe was widespread. Europe and North Africa were part of a highly interconnected trade network across the Mediterranean Sea, and this included slave trading. During the medieval period (500–1500), wartime captives were commonly forced into slavery. As European kingdoms transitioned to feudal societies, a different legal category of unfree persons -- serfdom -- began to replace slavery as the main economic and agricultural engine. Throughout medieval Europe, the perspectives and societal roles of enslaved peoples differed greatly, from some being restricted to agricultural labor to others being positioned as trusted political advisors.
White slavery refers to the slavery of Europeans, whether by non-Europeans, or by other Europeans. Slaves of European origin were present in ancient Rome and in the Islamic world, such as the Arab slave trade, the Barbary slave trade, the Black Sea slave trade and the Ottoman Empire.
The history of slavery spans many cultures, nationalities, and religions from ancient times to the present day. Likewise, its victims have come from many different ethnicities and religious groups. The social, economic, and legal positions of slaves have differed vastly in different systems of slavery in different times and places.
Slavery has historically been widespread in Africa. Systems of servitude and slavery were common in parts of Africa in ancient times, as they were in much of the rest of the ancient world. When the trans-Saharan slave trade, Indian Ocean slave trade and Atlantic slave trade began, many of the pre-existing local African slave systems began supplying captives for slave markets outside Africa. Slavery in contemporary Africa is still practiced despite it being illegal.
Slavery in the Ottoman Empire was a major institution and a significant part of the Ottoman Empire's economy and traditional society. The main sources of slaves were wars and politically organized enslavement expeditions in the Caucasus, Eastern Europe, Southern Europe, Southeast Europe, and Africa. It has been reported that the selling price of slaves decreased after large military operations. In Constantinople, the administrative and political center of the Ottoman Empire, about a fifth of the 16th- and 17th-century population consisted of slaves. Statistics of these centuries suggest that Istanbul's additional slave imports from the Black Sea slave trade have totaled around 2.5 million from 1453 to 1700.
The History of slavery in Iran (Persia) during various ancient, medieval, and modern periods is sparsely catalogued. Slavery was abolished in Iran in 1929.
The history of slavery in the Muslim world began with institutions inherited from pre-Islamic Arabia. The practices of keeping slaves in the Muslim world nevertheless developed in radically different ways in different Muslim states based on a range of social-political factors, as well as the more immediate economic and logistical considerations of the Arab slave trade. As a general principle, Islam encouraged the manumission of Muslim slaves as a way of expiating sins, and many early converts to Islam, such as Bilal, were former slaves. However, Islam never banned the practice, and it persisted as an important institution in the Muslim world through to the modern era.
Slavery existed in the area which was later to become Oman from antiquity until the 1970s. Oman was united with Zanzibar from the 1690s until 1856, and was a significant center of the Indian Ocean slave trade from Zanzibar in East Africa to the Arabian Peninsula and Iran, a central hub of the regional slave trade, which constituted a large part of its economy.
Slavery existed in the area of later Saudi Arabia until the 1960s.
The Black Sea slave trade trafficked people across the Black Sea from Europe and Caucasus to slavery in the Mediterranean and the Middle East. The Black Sea slave trade was a center of the slave trade between Europe and the rest of the world from antiquity until the 19th century.
The Trans-Saharan slave trade, also known as the Arab slave trade, was a slave trade in which slaves were mainly transported across the Sahara. Most were moved from sub-Saharan Africa to North Africa to be sold to Mediterranean and Middle Eastern civilizations; a small percentage went the other direction. Estimates of the total number of black slaves moved from sub-Saharan Africa to the Arab world range from 6-10 million, and the trans-Saharan trade routes conveyed a significant number of this total, with one estimate tallying around 7.2 million slaves crossing the Sahara from the mid-7th century until the 20th century when it was abolished. The Arabs managed and operated the trans-Saharan slave trade, although Berbers were also actively involved. Alongside Black Africans, Turks, Iranians, Europeans and Berbers were among the people traded by the Arabs, with the trade being practised throughout the Arab world, primarily in Western Asia, North Africa, East Africa, and Europe.
The Red Sea slave trade, sometimes known as the Islamic slave trade, or Oriental slave trade, was a slave trade across the Red Sea trafficking Africans from the African continent to slavery in the Arabian Peninsula and the Middle East from antiquity until the mid-20th-century. When other slave trade routes were stopped, the Red Sea slave trade became internationally known as a slave trade center during the interwar period. After World War II, growing international pressure eventually resulted in its final official stop.
Slavery existed in Morocco since antiquity. Morocco was a center of the Trans-Saharan slave trade route of enslaved Black Africans from sub-Saharan Africa, as well as a center of the slave trade of Barbary slave trade of Europeans captured by the barbary pirates. The slave trade was suppressed in Morocco in the 1920s.
Slavery in Egypt existed up until the early 20th century. It differed from the previous slavery in ancient Egypt, being managed in accordance with Islamic law from the conquest of the Caliphate in the 7th century until the practice stopped in the early 20th-century, having been gradually abolished in the late 19th century. Slave trade was abolished successively between 1877 and 1884. Slavery itself was not abolished, but it gradually died out after the abolition of the slave trade, since no new slaves could be legally acquired. Existing slaves were noted as late as the 1930s.
Slavery existed in the Trucial States (1892–1971), which later formed the United Arab Emirates. The Trucial States consisted of the Sheikdoms Dubai, Abu Dhabi, Sharjah, Ajman, Umm Al Quwain, Fujairah, and Ras Al Khaimah. The region was mainly supplied with enslaved people from the Indian Ocean slave trade, but humans were also trafficked to the area from Hejaz, Oman and Persia. Slaves were used in the famous pearl fish industry and later in the oil industry, as well as sex slaves and domestic servants. Many members of the Afro-Arabian minority are descendants of the former slaves.
Open slavery existed in Bahrain until the 1930s. Slavery was formally abolished in Bahrain in 1937. Slavery ended earlier in Bahrain than in any other Gulf state, with the exception of Iran and Iraq. Many members of the Afro-Arabian minority are descendants of the former slaves. Slavery of people from Africa and East Asia was succeeded by the modern Kafala system of poor workers from the same region were slaves had previously been imported.
Slavery is noted in the area later known as Algeria since antiquity. Algeria was a center of the Trans-Saharan slave trade route of enslaved Black Africans from sub-Saharan Africa, as well as a center of the slave trade of Barbary slave trade of Europeans captured by the barbary pirates.
Slavery existed in the territory of the modern state of Iraq until the 1920s. When the area later to become the modern state of Iraq was a center of the Abbasid Caliphate (750–1258), the area was a major slave trade destination, and slaves were imported to Iraq from the North along the Volga trade route, from the West via the Red Sea slave trade, and from the South from the Indian Ocean slave trade.
Slavery existed in the territory of the modern state of Syria until the 1920s.
Open slavery existed in the region of Palestine until the 20th-century. The slave trade to Ottoman Palestine officially stopped in the 1870s, when the last slave ship is registered to have arrived, after which slavery appeared to have gradually diminished to a marginal phenomena in the census of 1905. However, the former slaves and their children still continued to work for their former enslavers, and were reported to still live in a state of de facto servitude in the 1930s. Many members of the Black Palestinians minority are descendants of the former slaves.
