Answer :
Final answer:
America joined WWI primarily due to unrestricted submarine warfare and the Zimmermann Telegram. President Wilson declared war in April 1917, leading to the deployment of American troops to support the Allies. Their contribution significantly impacted the war's outcome.
Explanation:
Why America Joined WWI
America joined World War I for several reasons, most notably due to the unrestricted submarine warfare by Germany and the Zimmermann Telegram. The status of neutral shipping vessels became precarious as Germany sought to cut off supplies to the Allies. The sinking of the Lusitania in 1915, which resulted in the death of 128 Americans, further inflamed public opinion against Germany.
How America Joined the War
In April 1917, after nearly three years of remaining neutral, President Woodrow Wilson asked Congress to declare war on Germany. On April 6, 1917, Congress approved the declaration. The U.S. initially contributed troops and supplies to the Allies, with the American Expeditionary Forces (AEF) led by General John J. Pershing arriving in France by June 1917. Their fresh troops and resources played a crucial role in turning the tide of the war in favor of the Allies.
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