There was a treaty of Versailles, that stopped the Germans from having any allies, make their land bigger, and other stuff.
Congress and the president also a lot of Americans wanted us to enter world war one
It's a bit late now, it ended almost a century ago.
1914
1986
1917
April 6th, 1917
Marines
If you mean WWll 1939, or for WW1 it was 1914.
Russia wanted to protect the Slavic peoples of Serbia
He didn't enter the war, he started it. He was very upset by the Treaty of Versailles(after WW1), and wanted revenge.
Germany was allied with Austria-Hungary, Bulgaria and the Ottoman Empire. The United States was not prompted to enter the war by the formation of those alliances.
in America people had a negative attitude towards the war. They were still getting over WW1 and believed WW2 was Europe's problem and that we should not get involved.