How significant was the Zimmerman Telegram and our involvement in WWI.

It caused the United States to enter the war officially.

Explanation:

The Zimmerman Telegram was a telegram asking Mexico to enter the war and attack America. When American offcials heard of this, we became increasing mad at Germany. After Mexico declined, the United States, fearing German attack entered WWI officially.

It resulted in the United States entering World War I.

Explanation:

The United States Enters WWI

The United States had intended to stay neutral throughout the war, taking advantage of trade with countries on both sides of the conflict. However, when Germany began attacking submarines, many neutral ships became casualties.

While there were several instances of German submarines sinking passenger and commercial ships, the most well-known is the Lusitania. The Lusitania was a British ocean liner that was traveling from New York to Liverpool, carrying hundreds of Americans. The Germans sank the ship on May 7, 1915, killing all on board—including 128 American citizens. There was widespread condemnation of the attack and calls for the United States to join the war. But the United States continued to stay neutral until 1917.

The final straw for the United States was an intercepted German message to Mexico. In January of 1917, the United States intercepted the Zimmerman telegram, which stated that Mexico should join with Germany and declare war on the United States. If Mexico agreed, it would be awarded territory in the American southwest.

Congress then passed a $250-million-dollar arms appropriation bill, allowing the United States to prepare for war. Still, it was not until the Germans sank four more US commercial ships that the United States officially declared war on Germany. Once the United States joined the war, it brought fresh troops, more weapons, and a renewed sense of hope. American involvement was significant in turning the tide of the war.

How the Zimmerman telegram was intercepted and decoded is an interesting story. You can learn more about it (and see a copy of the original note) here. See what the United States actually knew and if you think it was enough of a justification to join the war.

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