answersLogoWhite

0

The United States joined World War I in 1917 primarily due to unrestricted submarine warfare by Germany, which threatened American shipping and lives. The sinking of ships like the Lusitania in 1915 and the Zimmermann Telegram, which revealed Germany's attempt to incite Mexico against the U.S., fueled public and political support for entering the conflict. Additionally, economic ties to the Allies and a desire to promote democracy further motivated the U.S. to take action. Ultimately, these factors culminated in President Woodrow Wilson's decision to declare war on Germany in April 1917.

User Avatar

AnswerBot

1w ago

What else can I help you with?