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The United States new after Nazi Germany took over France that they would have to be invloved in the war, Great Britain would be alone with no help. Great Britain resisted the invasion and also succeeded. Also after Pearl Harbor the U.S declared war on Japan and its Aliies.

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13y ago
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14y ago

a. Zimmerman Note: Telegraph, which was intercepted by the USA, from Germany to Mexico. Germany wanted Mexico to attack the USA and when they defeated the USA they could have lands which were taken from Mexico after The Mexican-American War.

b. Sussex Pledge: U-Boat attacks on American merchant ships. The Germans promised not to fire at American ships. This is a promise that the Germans had broken.

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12y ago

1) The German use of unrestricted submarine warfare.

2) Japan's attack on Pearl Harbor, the answer to which was the US's declaration of war on Japan and its ally Germany.

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Q: What caused the US to declare war on Germany?
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Related questions

What was happening in Europe that caused the US to declare war on Germany?

The US did not declare war on Germany. Germany declared war on the US shortly after the Japanese attack on Hawaii.


Did the US declare war on Germany yes or no?

DID THE UNITED STATES DECLARE WAR ON GERMANY FIRST YES OR NO


Who did the us declare war on in World War 1?

germany


When did Italy and Germany declare war in the US?

in 1942


In what year did the US declare war on Germany?

1917


Why did the US declare war with Germany?

Besides the obvious, because Germany declared war on the US hours before.


Who did US declare war on first in World War 2?

Germany


What led to the us full involvement in World War 2?

The immediate cause was Japan's attack on Pearl Harbor. This caused the US to declare war on Japan, which led to Germany and Italy declaring war on the US.


In what year did the US declare War against Germany?

December 11, 1941, immediately after Germany declared war on the US.


Why do the US declare war on Germany?

Germany declared war on the us after Japan carried out it's part in Pearl Harbour.


On what date did the us declare war on Germany?

December 11, 1941. only hours after Germany declared war on the US


Why did the us declare war to Germany?

Thats what i want to know!