Great Britain entered WWI because of the idea of collective security, where an attack on one country means an attack on all other countries in the alliance. Therefore, when Germany invaded Belgium, G.B declared war on Germany.
what war?World War 1NovaNet: Germany invaded Belguim in order to march into Framce.
A nation
Great Britain declared war on Germany in September 1939 after Germany invaded Poland.
They and Great Britain had committed to the defense of Poland.
Great Britain entered World War 2 in 1939 after Germany invaded Poland.
It caused a decrease in production and power
It caused a decrease in production and power.
Japan wasn't in WW1.
the catylist that caused America to enter world war two was the bombing of pearl harbour.
WW1 actually started as a conflict between the small country of Serbia and Austria-Hungary because Serbia supported the assasination of the Archduke or Austria-Hungary. Because Serbia was in an alliance with Britain, it had an obligation to enter the war, along with many other countries that entered on both sides of the intricate system of alliances that made up Europe and caused World War 1.
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 entered World War I primarily due to the German invasion of Belgium on August 4, 1914. Britain had a treaty obligation to protect Belgian neutrality, which was violated by Germany's military actions. Additionally, concerns over the balance of power in Europe and alliances with France and Russia further compelled Britain to join the conflict.