America was drawn into the conflict by the Zimmerman telegraph and unrestricted submarine warfare. On January 16, 1917, Foreign Secretary of the German Empire Arthur Zimmerman sent a coded message to the German ambassador in Mexico City, Heinrich von Eckart informing him Germany would
America was drawn into the conflict by the Zimmerman telegraph and unrestricted submarine warfare. On January 16, 1917, Foreign Secretary of the German Empire Arthur Zimmerman sent a coded message to the German ambassador in Mexico City, Heinrich von Eckart informing him Germany would