It's common nickname is the 'Union Jack'.
The Union Jack (United Kingdoms flag) is a mixture of the English, Scottish, and Northern Irish flags.
United Kingdoms was created in 1993-08.
UNON JACK
The American Flags nickname is Old Glory.
the first flags
192 flags of the members of the United Nations
The nation that buys the most United States flags is the United States.
In 1469, the kingdoms of Castile and Aragon were united by the marriage of Isabella and Ferdinand. Although the kingdoms were united, they remained largely independent.
Well there was many little kingdoms before 1860 because italy was not united yet but the exact number of the versions of italian flags is Troll
the united kingdom
One can find information on old kingdoms from websites like Six Flags, Wikipedia, Phouka, Old Kingdoms, Think Quest, Gimonca, British Museum and Then Again.
The U.S. flag is often called "Old Glory."