History of the British Union Jack Flag
In 1603, James VI of Scotland inherited the English and Irish thrones (as James I), thereby uniting the crowns of England,
Scotland and Ireland in a personal union (which remained separate states). On 12 April 1606, a new flag to represent this regal
union between England and Scotland was specified in a royal decree, according to which the flag of England (a red cross on a
white background, known as St. George's Cross), and the flag of Scotland (a white saltire on a blue background, known as
the Saltire or St. Andrew's Cross), would be joined together, forming the flag of Great Britain and first union flag.
In 1801, the diagonal red cross of Ireland's St. Patrick was added to the flag, and it has remained the flag of Great Britain
to this day, the Union Jack.