Why did the Zimmerman Telegram upset the United States? Check all of the reasons that apply. It included comments about the cowardice of the United States. It threatened that Germany would invade Mexico. It declared the renewal of unlimited submarine warfare. It proposed an alliance between Germany and Mexico against the United States.

The Zimmerman Telegram upset the United States because It declared the renewal of unlimited submarine warfare (option C) and It proposed an alliance between Germany and Mexico against the United States (option D)

The Zimmermann telegram is the name of a secret communication issued by the German Foreign Ministry in January 1917 to Mexican president that proposed a military alliance between the then German Empire and Mexico.

This telegram was intercepted by British intelligence and shared with United States President Woodrow Wilson, causing the United States to enter the war.

In this telegram, Germany made the following proposals to Mexico:

Proposed alliance between Mexico and the German Empire

Germany promised to provide financial and arms assistance to Mexico so that this country could recover by force the territories of Texas, New Mexico and Arizona.

Begin the submarine warfare on February 1, without restriction.

According to the above, the correct answers are option C and D because they present the information that corresponds to the content of the Zimmerman telegram.

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