Hello, I believe that the answer you are looking for is Russia but I'm not sure when East Berlin was controlled. If you put the year maybe I would put a different answer. Anyway its D.
Answer:
Bus boycott
Explanation:
The bus boycott, inspired by Rosa Parks was when black people refused to go on the buses until they changed the racist rules
Battle Of Fort Sumter<span> Summary: The </span>Battle of Fort Sumter<span> was the first </span>battle<span> of the American Civil </span>War<span>. The intense Confederate artillery bombardment of Major Robert Anderson's small Union garrison in the unfinished </span>fort<span> in the harbor at Charleston, South Carolina, had been preceded by months of </span>siege<span>-like conditions.</span>
The primary characteristic of a feudal society is the exchange of land for services.
The overlord will grant the vassal a land in exchange for the vassal's services. Services like fighting beside the lord in terms of war. Vassals have their own men and since the vassal is at the service of the overlord, his men is also at the service of the overlord.