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Germany didn't declare war on the US in World War 1. It was the US that declared war on Germany on April 6th 1917 as a result of the unrestricted submarine war introduced by Germany in January that year. - I Warner

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βˆ™ 17y ago
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βˆ™ 16y ago

1917, as a result of the German attack on the Lusitania.

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βˆ™ 12y ago

April 6th 1917

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Q: When did the us declare war in ww1?
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Did great Britain declare war on Germany in ww1?

yes


Why did the US change from neutral to declare war on Germany?

In the WW1 the US declared war on Germany after the sinking of seven US merchant ships by German submarines and the publication of the Zimmerman Telegram. In the WW2 was Hitler to declare War on the USA on Dec.11,1941.


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The US didn't declare war on Russia. The "cold war" refers only to the hostility of each country towards eachother.


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