2 Sep 1939 - 8 May 1945.
Great Britain, or more correctly The United Kingdom of Great Britain and Northern Ireland, was involved in both World War 1 and World War 2.
5 years
yes, Britain entered the war at the beginning, the united Staes entered the war over two years later.
world war 1
There were many countries that were controlled by Great Britain at the beginning of World War 1.
No. Virginia, along with twelve other colonies, permanently broke away from Britain in the 1770s-1780s, about 170 years before World War started.
The whole war
Britain
George VI was king of Great Britain during World War 2.
World War 2 was of two alliances. The Axis, and the Allies. Great Britain and U.S.A were on the Allies side.
Britain had a coalition government during World War 2
Great Britain declared war on Germany in September 1939 after Germany invaded Poland.