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Japan bombing Pearl Harbor on December 7, 1941.
The Japanese attack on Pearl Harbor, December 7,1941 was the immediate cause of the United States entering WWII. The US declared war on Japan after the attack, and two days later Germany declared war on the US and we were in it.

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12y ago
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9y ago

The Japanese attacks on the US at several places in the Pacific & Asia: Philippines, Wake Island, Guam, Midway Atoll, and the Hawaiian Islands. The Japanese attack against the US Military bases on the Hawaiian island of Oahu is often called the "Pearl Harbor attack", although the attack was made against several US bases in addition to Pearl Harbor. The Hawaiian attacks on Sunday morning, December 7, 1941 occurred a few ours before the other attacks. For those places west of the International Date Line, it was December 8, 1941.

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8y ago

The immediate cause was the Japanese bombing of Pearl Harbor, Hawaii. However FDR had been trying to gently nudge public opinion in that direction since the fall of France in 1940. However this only got us into the war against Japan in the Pacific, there was a significant proNazi minority of very influential people in the country (e.g. Henry Ford) that would still have opposed entering the war in Europe.

However Adolf Hitler made a serious strategic error and personally declared Germany to be at war against the U.S. (in support of Japan). This act caused the U.S. entry into the war in Europe.

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11y ago

Pearl Harbor.

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Q: What was the immediate cause of American entry into World War 2?
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Immediate cause for US entry into war world 2?

The attack on Pearl Harbor

What were the causes results of American entry into World War 1?

The immediate cause of American entry into World War 1 was the German submarine warfare that targeted American ships. In addition, the interception and publication of the infamous Zimmermann Telegram, in which Germany proposed a military alliance with Mexico against the United States, further pushed the U.S. to join the war. American entry ultimately tipped the balance in favor of the Allies and led to their victory. Additionally, it accelerated social and political changes in the United States, as well as increased American influence on the world stage.

What was the immediate reason for the entry of the US into World War 2?

The Japanese attacked Pearl Harbor December 7, 1941.

How did American entry into world 1 affect Germany strategy?

Not Sure

Which of these was a cause of Americas entry into world war 1?

the Zimmermann note

Which was a basic cause of US entry into World War 1?

Economic gain.

What was the immediate cause of US entry into Wolrd War1?

Japanese attack at Pearl Harbour. That's World War 2. The United States entered World War I after the Zimmermann note, which offered German aid for a Mexican invasion of the US, was intercepted, translated and sent to Woodrow Wilson by the British.

What event triggered the American entry into World War 1?

German submarine warfare

One of the primary causes for US entry into world war 1 was the use of?

do you mean what caused us entry into world war one? if so then the sinking of the USS Lusitania by German u-boats was what caused American entry into the war

Which American attitude at the beginning of world war 2 delayed the country's entry into the war?


How did American entry into World War I affect Germany's strategy?

They believed they needed to crush the Allies before American troops arrived.

How did American entry World War 1 affect Germany and strategy?

they believed they needed to crush the allies before american troops arrived.