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.
Great Britain
to look after belgium
During World War 1 Great Britain possessed, among others, East Africa, Portugal and India. These colonies served as a source of supplies for the war, including soldiers.
allies
Great Britain demanded that Germany respect Belgium's neutrality, but Germany refused.
Britain had an agreement with France that if Poland was invaded they would both step in to help.
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.
world war 1
There were many countries that were controlled by Great Britain at the beginning of World War 1.
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
There were no reasons for Great Britain declaring war upon Germany other than Germanys invasion of Poland and their refusal to get out when requested to do so. The Polish had a treaty with the British to come to one anothers aid in case of invasion.
Entering into World War 2 was the reason why we got out of the Great Depression.