What is one reason that the United States entered world war 2?

Answer 1

I really don't think that there was any other reason for the United States entering the war. The American public was against another war and didn't want to enter WW2 after WW1. But after the attack on Pearl Harbor everything changed in a day and we entered the War with the American people's blessing. 1) Japan bombed Pearl Harbor and declared war on Britain, the USA, Canada & Australia on 7/12/41. 2) Germany & Italy declared war on the USA on 11/12/41. 3) Bulgaria, Romania & Hungary declared war on the USA on 13/12/41.

Answer 2

Lots but one big one was that Japan attacked Pearl Harbor. So in turn the US declared war on Japan. Which due to the Tripartite Pact signed by Germany, Italy, and Japan meant that Germany and Italy declared war on the US. Like I said there were lots but the one that pushed the US over the edge was Pearl Harbor.

Answer 3

The U.S. joined World War 2 after Japanese forces attacked an American naval port in Hawaii: Pearl Harbor, on December 7, 1941. Three days later Hitler declared war on the U.S. following President Roosevelt's declaration of war on Japan.

Answer 4

After pearl harbor the Us declared war on Japan (an Allie of Germany and Italy) Germany backed its Allie up and declared war on us!

Answer 5

United States joined World War 2 in 1941 after Japan attacked Pearl Harbor, Hawaii

Answer 6

The bombing of Pearl Harbor was the primary reason for USA entering WW2

The bombing of Pearl Harbor was the primary reason for USA entering WW2

Answer 7

The bombing of Pearl Harbor was the primary reason for USA entering WW2

Answer 8

Pearl Harbor.

Answer 9

The US was attacked.