The US entered when it declared war on Germany on April 6th 1917. So they entered late.
No they won against Germany in 1918.
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WW2 (:
The US did enter into an undeclared shooting war with Germany in the fall of 1941 because Germany has declared war on the US.
When France and Germany entered in WW1, there weren't any US troops in France. The Americans came after 3,5 years. France and the UK had to fight against Germany alone for 3,5 years, suffering huge losses.
December 11, 1941, immediately after Germany declared war on the US.
No. The US entered WWI to support the Europeans.
Germany.
The attack on Pearl Harbour forced the U.S. to take action. As a result of Japan's attack, U.S.A. was forced to enter into war against Japan, in order that no more atrocities would happen. This was World War II. U.S.A. also entered into a war against Germany, because Germany and Japan were allied, U.S.A. and Germany were then enemies.
After the Japanese attack on Pearl Harbor and the US Decleration of War against Japan, Germany declared War on the US.
US