Various reasons drew the United States into WWII. The attack on Pearl Harbor started the war in the Pacific against Japan. As for the European Theater, The sinking of the RMS Lusitania by a German U-Boat (attack on a civilian vessel which had Americans on board) and the discovery of the Zimmerman note (Germans asked tried to turn Mexico against the US) finally provided the reason to join the war.
What actually cause them to join the war was the attack on Pearl Harbor
japan and america
The sinking of the Lucitania was the event that made the United States join World War 1
yes it did
FDR
Isolationism and neutrality.
us(united state ) enter to the war.
For the United States it was in present day Hawaii.
their lack of brains
The Triple Entente
The proximate cause was Japan's attack on Pearl Harbor (December 1941). Following that, the US declared war on Japan and, in response, Germany and Italy declared war on the US.
United state get injured in world war 2 because japan attack on Pearl Harbor in Hawaii. Many Ameriacan lost their lives.