Great Britain declared war on Germany in September 1939 after Germany invaded Poland.
what war?World War 1NovaNet: Germany invaded Belguim in order to march into Framce.
Belgium
Great Britain entered World War I in response to Germany's invasion of Belgium on August 4, 1914. Britain had a treaty obligation to protect Belgian neutrality, which was violated by Germany's aggressive actions. The violation of this neutrality, combined with concerns over German expansionism and the balance of power in Europe, compelled Britain to declare war on Germany.
Great Britain teamed up with the Allies.
Germany was TOO imperialistic, and they forced Britain into the war.
Great Britain entered World War 2 in 1939 after Germany invaded Poland.
They and Great Britain had committed to the defense of Poland.
Japan wasn't in WW1.
yes, Britain entered the war at the beginning, the united Staes entered the war over two years later.
what war?World War 1NovaNet: Germany invaded Belguim in order to march into Framce.
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.
They did enter the war.
The US and Great Britain fought a war in the early 19th century known as the War of 1812.
world war 1
There were many countries that were controlled by Great Britain at the beginning of World War 1.
Belgium
1812