Germany's practice of unrestricted submarine warfare that led to the sinking of the Lusitania and the Zimmerman telegram, in which Germany promised Mexico its old lands in California, Arizona, and New Mexico if Mexico attacked the United States all led to the United States' entrance into World War I.
Germany.
Japan bombing Pearl Harbor
Japanese attack on pearl harbor in 1941
your mon
The two main factors that caused the US to enter World War II were the Japanese attack on Pearl Harbor on December 7, 1941, and Germany's declaration of war on the US on December 11, 1941. These events directly threatened American national security and forced the United States to take an active role in the war.
Gremany
the catylist that caused America to enter world war two was the bombing of pearl harbour.
the sinking of the ship lusitania:)
It was a very cool place.
Germany.
Pearl harbor.
Europe needed help and weapons
Pearl Harbor is the name. It did not start world war 2, it caused the USA to enter into the war.
what war?World War 1NovaNet: Germany invaded Belguim in order to march into Framce.
They bomd pearl habor
Japan bombing Pearl Harbor
Emotional problems to the soldiers and their families. Bankruptcy to the nation.