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America entered World War II primarily due to the Japanese attack on Pearl Harbor on December 7, 1941, which killed over 2,400 Americans and galvanized public opinion in favor of entering the conflict. Prior to this, the U.S. had been providing support to Allied nations through programs like Lend-Lease but had maintained a policy of neutrality. The attack prompted Congress to declare war on Japan the following day, and shortly after, Germany and Italy declared war on the United States, fully involving America in the global conflict.
What else can I help you with?
What event caused America to enter the war on the side of the allies?
your mon
Which nation's actions finally forced the US to enter the war?
The bombing of Pearl Harbor by Japan pulled the U.S. into WWII
Was America part of the Cold War?
Yes from the end of WWII until 1991, America was involved n the Cold War with communist countries like the Soviet union and Red China.
What event finally caused the US to enter World War 2?
Japan bombing Pearl Harbor
What two German actions caused the US to enter Wold War 1?
The Zimmermann Note, submarine warfare
What caused Great Britain to enter WWII?
The German invasion of Poland on 1 September 1939.
What event caused America to enter the war on the side of the allies?
your mon
What were the effects on pearl harbor in world war 2?
battleship row was destroyed worst was uss arizona caused usa to enter wwii
What was the great catylist that compelled America to enter the world war two.?
the catylist that caused America to enter world war two was the bombing of pearl harbour.
Why did the Americans and the Japanese enter into war?
Japan flew their airplanes over an American navy base and dropped bombs on it. That started WWII for America.
What two wars did the us not enter at the beginning?
WWI and WWII
What spark caused the us to enter World War 2?
The attack on Pearl Harbor by the Japanese Military.
What was America's last declared war?
WWII.
What event led to America getting involved in World War 2?
The Bombing of Pearl Harbour by the Japanese on Dec 7, 1941, led the US to officially enter WWII on the side of the Allies.
What countries had gas masks?
In isreal,russia,brtian toady,britain in wwII,wwII,military,war,and america
What significant historical events caused the Olympic games to be cancelled?
WWII
Why were the Japanese so late in entering the war?
You might mean why were the Americans so late in entering the war; if you're referring to WWII. The Japanese were probably the first enter WWII, if one were to count fighting in China in 1933. The US didn't enter WWII until the end of 1941 (December 7, 1941).
