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Strictly speaking it didn't, but on 11th December 1941 - four days after Pearl Harbour - Germany declared war on the United States. The US and Britain then pooled their resources to fight Germany on the European mainland. Without the extra manpower and weaponry that the US brought into the war, it is unlikely that Britain could have defeated Germany on its own. Eventually, it needed the three most powerful nations on earth at the time to defeat the German war machine, US, UK and USSR.

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13y ago
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16y ago

It brought the US into the war with millions of fresh troops and almost unlimited resources.

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12y ago

Germany surrender but Japan did not. After the two bombs dropped over Hiroshima and Nagasaki Japan surrendered.

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Q: How did pearl harbor help Britain to win World War 2?
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Related questions

What steps did Roosevelt Take to help britain and up until the attack on Pearl Harbor?

The Lend-Lease Act .


What was franklins roosevelts position on world war 2 before Pearl Harbor?

His position was to be supportive of the allies. Before the attack on Pearl Harbor, Roosevelt found ways to help Britain and France militarily when World War II started in 1939. He kept in regular contact with Winston Churchill.


What are 5 events that led to world war 2?

Pearl harbor. Hitler killing jews. Invasion of poland. America is allies with france. America had to help allies.


Did the US help defeat he Japanese after the attack on Pearl Harbor?

yes they did the US joined the war after the attack of pearl harbor


When did Americans enter world war 2?

When pearl harbor happened the USA decided that they needed to help the other allied countries fight in world war II!


What is Population of japan fighters at world war 2 in pearl harbor?

To help you out, there were over 300 Japanese planes.


How did america get in World War 2?

the bombing of pearl harbor and FDR was buddies with winston churchill and was trying to help him.


Is a silver plated object valued for it's silver if so by how much?

Britain's ask for help to defeat Germany and the bombing in pearl harbor done by the Japanese


Why didn't the Germans help the Japanese in bombing pearl harbor?

The Germans didn't help the Japanese in bombing pearl harbor because the Germans did not want to help the Japanese by wasting their planes and air craft carriers in the event.


Did the US end World War 2 with help from the USSR?

No, the US did not end the war with help from the Soviet Union. The Soviet Union, along with Britain and other Allied Europeans, ended the war with some help from the US. World War II was not America's war, it was Europe's. The US only entered after Japan bombed Pearl Harbor.


Did the us help defeat the Japanese after the attack of pearl harbor?

Yes


Why did the US rebuild Hiroshima and Nagasaki after surrender when Japan didn't help repair Pearl Harbor?

You are aware that unlike Pearl Harbor, the American bombing of Hiroshima and Nagasaki was an attack on civilians, yeah? -------------------- Pearl Harbor as any base, house many civilians.