Very often it is an expression of human hopes
and ideals. Behind it is the history of the country it represents, the past and present of whole peoples, and very often their future too.One of the oldest flags in the world is the British. The flag of the UK, known as the UNION JACK, is made up of three crosses. The upright red cross is the cross of St. George, the patron saint of England. The white diagonal cross is the cross of St. Andrew, the patron saint of Scotland. The red diagonal cross is the cross of St. Patrick, the patron saint of Ireland.
Some historians say that the British flag got the name of Union Jack from James I under whom Scotland and England were united in the 17th century.
The flag of the UK