the USA sent fresh soldier and suppliesand helped them when they needed it the most
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Germany
The US entered the war in April of 1917 and were on the Allies side.
The United States and Great Britain have been allies since 1917 when the U.S. went to Britain's aid . They have remained strong allies ever since.
The United States continues to help their allies, even going so far as to help the countries that are not their allies. The only times they do not interfere with what their allies are doing at the moment is when their allies expressively ask for the United States to stay out of their business.
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Germany
The allies entered the war in 1914; the US entered the war in 1917.
In 1917 the Lusitania - a ship - was sunk with Americans on board.
The US joined the war on the side of the Allies on April 6, 1917.
The US became a combatant, part of the allies in 1917.
The US entered the war in April of 1917 and were on the Allies side.
The US economy was in a state of depression in 1917. However, after World War I begins in 1917, the economy is stimulated due to trading war necessities with Britain and other allies.
The U.S. were part of the Allies.
By 1917, the allies develope the Sopwith-Camel, an excellent fighter plane. Their fighting technique was to engage in aerial "dogfights" or duels, manoeuvering their light planes to dive on the enemy from the rear.
The United States and Great Britain have been allies since 1917 when the U.S. went to Britain's aid . They have remained strong allies ever since.
US had lent a lot of money to the Allies since the beginning of the war. If the Allies lost, the chances of US getting these loans repaid any time soon were slim. America HAD to enter WW1 to protect its long time financial investment in the Allied cause .