Question

Which was a major cause for the entry of the US into World War I?

The desire to collect reparations


Germany’s invasion of Belgium


Germany’s decision to resume unrestricted submarine warfare


Russia’s decision to leave the war

Answer 1

C. Germany's decision to resume unrestricted submarine warfare.

Step-by-step explanation:

The United States join the war in 1917 due to German threats such as the Zimmerman Telegram and Unrestricted Submarine Warfare. German U-boats in the Atlantic had caused trouble in the sinking of multiple American ships or ships where Americans were on. This angered the American government and its populace.