The bombing of Pearl Harbour by the Japanese. Up until 1941, there was no Japanese-American war. Simply Sino-Japanese.
This led to the increased American activity with the Chinese and eventually, in 1945 the USA bombed Japan back which signaled the end of the Second World War in Asia.
Unfortunately China continued fighting until 1949 in a vicious civil war.
They started it, They started it, Japan planned to conquer all of east and south-East Asia for her own benefit (calling it, ironically, the Great East Asia Co-Prosperity Sphere) and America, with her large Pacific fleet, was viewed as the greatest potential obstacle to the plan. The Japanese Prime Minister, General Hedeki Tojo, against the advice of the Emperor and Admiral Yamamoto, decided that if the US Navy could be destroyed in one great blow, this would eliminate America as a threat. Hence the attack on Pearl Harbor. Unfortunately for Japan, the US carrier fleet was at sea that day, and the plan failed, leading to Japan's inevitable defeat, as the US carriers defeated the Japanese fleet at Midway, from which Japan never really recovered, and she was not equipped for a long war.
the Nazis convinced them after their ally.
The looming US Civil War.
France already respected the US; Britain respected the US after the war.
The American Civil War or The War Between the States.
US wanted to trade with the other countries causing them to get involved in the war
Nothing could have caused the us to win this insane war.
The nuclear weapons that the super power countries had caused international tensions after World War 2. This caused the Cold war between the US and Russia.
The looming US Civil War.
Clash of political ideologies.
No it was a bad idea because it just caused tension between us and russia
when japan bombed hawaii that was the outrage that causedus to bomb them and then the us broke into world war 1 between japan and usa so suck it
There were a number of factors which caused that war to be.
Atomic and nuclear weapons.
Yes but not caused by the us.
It caused a devision between the North and the South, and created financial problems for the US.
between the North and the South so they had the war and then that broke us apart for a while.
U 2 incident
between the North and the South so they had the war and then that broke us apart for a while.