Why did the zimmermann telegram between germany and mexico concern the united states? a)germany promised to supply mexico with u-boats to attack american commercial ships. b)germany promised to set up a king in mexico undermining democracy in the americas. c)germany promised to mexico reconquer texas, new mexico, and arizona. d)germany promised to invade the united states across the texas-mexico border.

The Zimmermann telegram promised Mexicans to reconquer Texas as well as New Mexico and Arizona and that was a concern for the United States.  

Further Explanation:-

The Zimmermann telegram was known as a secret communication telegram which was issued from the Foreign Office of Germany in the year 1917 and in this letter Germany proposed for an alliance with Mexico. It was written in the telegram that if the United States entered World War 1, then Mexico will be able to recover Texas, New Mexico, and Arizona. It was the British Intelligence unit that intercepted this letter.  The revelations made in this telegram enraged Americans and they were further enraged when the foreign secretary of Germany during that time, Arthur Zimmermann admitted publicly that the telegram which he addressed to Mexico was genuine and he meant whatever there was written in the telegram. The intelligence interception from Britain was known to be among the most significant achievements of British intelligence during world war 1. The message in the telegram was coded and dispatched by Arthur Zimmermann and it was sent to the German ambassador who was there in Mexico. The Germans presumed that this telegram will almost certainly lead to the war of Germany with the United States.    

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Answer details:

Grade – High School

Subject – History

Chapter – Zimmermann Telegram

Keywords – Zimmermann, Telegram, Germany, United States, Arizona, Texas, New Mexico, Mexico, Britain, Intelligence.