In what year did the United States enter World War I?

In what year did the United States enter World War I?

• A. 1914
• B. 1915
• C. 1917
• D. 1918

Answer: (C)

Entering World War I in 1917 marked a turning point for the United States, shifting from long-standing neutrality to active involvement in the conflict. Although the war began in 1914 and the U.S. initially stayed out, German actions—especially unrestricted submarine warfare that threatened American ships—and the Zimmermann telegram, which proposed a German-Mexican alliance against the United States, pushed the nation toward intervention. Congress then declared war on Germany in early April 1917, bringing American forces into the fighting. By 1918, the United States was actively engaged on multiple fronts and helping to tip the balance in favor of the Allies, but the year of entry remained 1917.

Entering World War I in 1917 marked a turning point for the United States, shifting from long-standing neutrality to active involvement in the conflict. Although the war began in 1914 and the U.S. initially stayed out, German actions—especially unrestricted submarine warfare that threatened American ships—and the Zimmermann telegram, which proposed a German-Mexican alliance against the United States, pushed the nation toward intervention. Congress then declared war on Germany in early April 1917, bringing American forces into the fighting. By 1918, the United States was actively engaged on multiple fronts and helping to tip the balance in favor of the Allies, but the year of entry remained 1917.