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.
It took 6000 hours......................
Many considered Louis XVI to be ineffectual mainly because of the fact that the revolution had already taken place, and that he was unable to enact any meaningful policies.
The best choice would be the Nanjing Massacre led to the increased tension between the United States and Japan in the year 1937. This is because didn't like what the Japanese did in China and in other parts of Asia. The killings they made to many are not really favorable to the U.S.
gunpowder
The invention of gunpowder.
This period is also known as the medieval period and is known for the various discoveries and inventions made during this age.
