Because Japan invaded French Indochina
By placing trade restrictions on Japan.
The US tried to weaken Japan by placing trade restrictions on it.
thats just the way it is, the world will never be the same -TUPAC
Japan had conflicts with China and Russia before World War one.
Japan bombed Pearl Harbor, Hawaii on December 7th in 1941 and World War 2 officially started for the United States. Japan had been fighting long before that though. Japan had been after the South Pacific and China for a long time before that. Many say they started the war in 1937.
Japan
The united states was bombed by japan and they joined WW2 to kick their butts.
See website: Japan
The Emperor ruled Japan.
Before.
Japan admired Chinese culture and learned much from them. Before World War II, Japan invaded China.
Before the United States had entered World War II following the attack on Pearl Harbor, the country had imposed economic punishments on Japan because of the Second Sino-Japanese War. Following a series of increasingly tense 'incidents' from 1931 to 1937, a total war broke out between Japan and China. China was supported by the United States even though Japan received most of their petroleum and steel from the US.