A flag is a piece of fabric with a distinctive design and colours. It is used as a symbol, a signalling device, or for decoration. The term flag is also used to refer to the graphic design employed, and flags have evolved into a general tool for rudimentary signalling and identification, especially in environments where communication is challenging. Many flags fall into groups of similar designs called flag families. The study of flags is known as "vexillology" from the Latin vexillum, meaning "flag" or "banner".
A national flag is a flag that represents and symbolizes a given nation. It is flown by the government of that nation, but can also be flown by its citizens. A national flag is typically designed with specific meanings for its colours and symbols, which may also be used separately from the flag as a symbol of the nation. The design of a national flag is sometimes altered after the occurrence of important historical events. The burning or destruction of a national flag is a greatly symbolic act.
The Union Jack, or Union Flag, is the de facto national flag of the United Kingdom. The Union Flag was also used as the official flag of several British colonies and dominions before they adopted their own national flags. The flag continues to have official status in Canada, by parliamentary resolution, where it is known as the Royal Union Flag.
The flag of the state of Oregon is a two-sided flag in navy blue and gold with an optional gold fringe. On the front is the escutcheon from the state seal and on the reverse is a gold figure of a beaver, the state animal. Oregon is the only U.S. State to feature different designs on either side of its flag.
The flag of South Africa was designed in March 1994 and adopted on 27 April 1994, during South Africa's 1994 general election, to replace the previous flag used from 1928–1994.
The national flag of Romania is a tricolour. The Constitution of Romania states that "The flag of Romania is tricolour; the colours are arranged vertically in the following order from the flagpole: blue, yellow, red". The flag has a width-length ratio of 2:3; the proportions, shades of colour as well as the flag protocol were established by law in 1994, and extended in 2001. Its similarity to the flag of Chad has caused international discussion.
Flag terminology is the nomenclature, or system of terms, used in vexillology, the study of flags, to describe precisely the parts, patterns, and other attributes of flags and their display.
Vexillology is the study of the history, symbolism and usage of flags or, by extension, any interest in flags in general.
The ensign is a maritime flag that is used for the national identification of a ship. The ensign is the largest flag, generally flown at the stern (rear) of the ship while in port. In ports, depending on the ship's origin, it is sometimes identical with a jack on the bow of the ship. Jacks are more common on warships than on merchant ships.
The flag of Hawaii was first adopted in the early 19th century by the Hawaiian Kingdom and continued to be used after its overthrow in 1893. It is the only U.S. state flag to feature a foreign country's national flag—that of the United Kingdom's Union Jack—which commemorates the Royal Navy's historical relations with the Kingdom of Hawaii, and in particular the pro-British sentiment of its founder and first ruler, King Kamehameha I.
The national flag of the Republic of Moldova is a vertical triband of blue, yellow, and red, charged with the coat of arms of Moldova on the centre bar. The reverse is mirrored. The flag ratio is 1:2. Until further provisions, the State Flag of Moldova is used as the national flag and ensign as well; that is, civil, state and war flag and ensign.
The flag of Ontario is the provincial flag of Ontario, Canada. It is a defaced Red Ensign, with the Royal Union Flag in the canton and the Ontario shield of arms in the fly. The flag of Ontario was derived from the Canadian Red Ensign, which was used as a civil ensign and as a de facto flag of Canada from the late 19th century to 1965. It was adopted in a period when many Canadian provinces adopted their own flags. May 21 is Ontario Flag Day.
The flags of the U.S. states, territories, and the District of Columbia exhibit a variety of regional influences and local histories, as well as different styles and design principles. Modern U.S. state flags date from the turn of the 20th century, when states considered distinctive symbols for the 1893 World's Columbian Exposition in Chicago, Illinois. Most U.S. state flags were designed and adopted between 1893 and World War I.
The Commonwealth of Massachusetts has been represented by official but limited-purpose flags since 1676, though until 1908 it had no state flag per se to represent its government. A variant of the white flag with blue seal was carried by each of the Massachusetts volunteer regiments during the American Civil War alongside the National Colors. An exception were the two "Irish regiments", each of which was permitted to carry an alternative green flag with a harp symbol.
The Canadian Red Ensign served as a nautical flag and civil ensign for Canada from 1892 to 1965, and later as the de facto flag of Canada before 1965. The flag is a British Red Ensign, with the Royal Union Flag in the canton, adorned with the shield of the coat of arms of Canada.
The International Federation of Vexillological Associations is an international federation of 53 regional, national, and multinational associations and institutions across the globe that study vexillology, which FIAV defines in its constitution as "the creation and development of a body of knowledge about flags of all types, their forms and functions, and of scientific theories and principles based on that knowledge."
New England has no official flag. However, there have been many historical or modern banners used to represent the region in its history. While there are some variations, common designs include a plain colored field with a pine tree in the canton. The eastern white pine is the most common and prominent symbol of New England and is featured on many of the region's flags.
The flag of Boston consists of a sky blue field and the seal of the city of Boston, Massachusetts, United States, in the center. The flag is sometimes flown in a darker shade of blue, more of a turquoise. It was designed in 1913 and adopted by the Boston City Council on January 29, 1917.
The Ukrainian Heraldry Society is a Ukrainian non-governmental public organisation which researches Ukrainian heraldry, sphragistics, vexillology, genealogy, and emblems.
The Flag of Split is the vexillological symbol of the city of Split in Croatia. The flag is navy blue with stylized repeated name of the city symbolizing the bell tower of the Cathedral of St. Dominus raising above the historic city center.
Flag of Paraguay 
Flag of France
Flag of Antarctica 
Flag of the Margraviate of Austria (976–1136) 
normal and 
historical in the early 1990s. [2] 
