"we intend to begin on the first of february unrestricted submarine warfare. we shall endeavor in spite of this to keep the united states of america neutral. in the event of this not succeeding, we make mexico a proposal or alliance on the following basis: make war together, make peace together, generous financial support and an understanding on our part that mexico is to reconquer the lost territory in texas, new mexico, and arizona…"
the quote above has been taken from which of the following:
a. treaty of versailles
b. zimmerman telegram
c. lusitania report
d. triple alliance telegram