Question

Why did the publication of the Zimmermann note help bring the United States into World War I?

Answer 1

The note proposed an alliance between Germany and Mexico to attack the United States.

The German Foreign Minister Arthur Zimmermann sent a telegram to Mexico proposing an alliance, stating that if the United States declared war on Germany, Mexico should declare war on the United States.

Answer 2

Hey there! I'm happy to help!

The Zimmerman note was basically a secret communication between Germany and Mexico. Germany was basically telling Mexico to invade the United States. But, the note got discovered (so it wasn't secret anymore), so the U.S. was like "nuh uh" because Germany was being rude so they joined WWI.

Therefore, the answer is C. The note proposed an alliance between Germany and Mexico to attack the United States.

I hope that this helps! Have a wonderful day!