Japan decided to expand World War 2 when they decided to bomb Pearl Harbor. When Japan did this America got very angry and got involved in the war that they had not planned to enter. America had Actually said that they were not going to get involved in the World War, but Japan changed that.
On December 7, 1941 Japan bombed Pearl Harbor, prompting the United States to enter World War 2.
1930's in China. 1941 with the US.
America did not start WW2, Germany and Japan get the credit for that. The US did declare war on Japan on 08 December 1941, after the Japanese bombing of Pearl Harbor, and 11 December 1941 on Germany, being allied with Japan.
Hirohito .
Pearl Harbor, Dec 7th 1941, the Day of Infamy.
Germeny
1941
On December 7, 1941 Japan bombed Pearl Harbor, prompting the United States to enter World War 2.
Congress declared war on Japan because of that country's unprovoked attack on Pearl Harbor on December 7, 1941.
December 7, 1941
be cuz japan suck
December 1941.
The United States Senate declared war against Japan and later Germany during World War II in 1941.
December 7, 1941 .
December 8th, 1941
In 1941, attacking Pearl Harbour in Hawwaii.
7 December 1941