World War I/United States
Reasons for U.S. Involvement in World War I
- German submarine warfare; especially the sinking of the Lusitania by a German U-boat.
- The United States had economic and political ties to Great Britian
- The Zimmerman Telergram
- Inability to remain neutral
The Zimmerman Telegram was sent from Germany to Mexico in 1917. It asked Mexico to join the Central Powers and aatack the United States. Mexico refused to attack the U.S., but when the U.S. found out about the Zimmerman Telegram, it angered Americans and led to the U.S. declarign war on Germany.
The RMS Lusitania was a British ocean liner that was sunk by a torpedo from a German U-boat in 1915. 128 Americans on board were killed. This event angered many Americans, but the U.S. would remain neutral until Woodrow Wilson led us to war in 1917.