What were the main reasons for U. S. involvement in the war? How did events
in Russia in 1917 lead the United States to
enter the war?

The main reasons for America's involvement in World War I was Germany's all-out submarine warfare and the Zimmermann Telegram.

The First World War is a term to refer to one of the largest war confrontations in history. This was focused on the continent of Europe from 1914 to 1918.

The United States had a neutral position and did not want to get involved in the war. However, in 1917 as a result of the submarine warfare between Germany and the United Kingdom, some American ships were destroyed.

On the other hand, the intelligence service of the United Kingdom intercepted a telegram sent to the German ambassador in Mexico to propose an alliance to the president of Mexico against the United States. This event is known as the Zimmermann Telegram.

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