Answer:
1961?
Explanation:
In December 1961, only a few months after the U.S.-sponsored exile invasion at Bay of Pigs, Fidel Castro declared himself a Marxist-Leninist, obligating the Soviet Union to protect his new, vulnerable socialist nation.
C) treaty of versailles
bc it ended ww1 not 2 (might have caused ww2 though)
Because Nazis thought that the Jews were the ones causing their problems.
