How did the Luisitanian and Zimmerman
Telegram contribute to
U. S. involvement in
World War I?

The note revealed a plan to renew unrestricted submarine warfare and to form an alliance with Mexico and Japan if the United States declared war on Germany. The message was intercepted by the British and passed on to the United States; its publication caused outrage and contributed to the U.S. entry into World War I.

Explanation:

answer; /// i believe that the correct answer is (d)the huang he river valley;