Answer:
All the above is the answer.
Explanation:
Eastern European used the watee bodies around them as a transport medium, they traded via these water bodies and relied on some of these water bodies for survival.
the Black death was a disease of the dark ages that was carries by fleas on rats.
During the Berlin crisis of 1961, the government of the US made sure that the world understood that they would support West Berlin at all costs. It was a risky move that could had led to war, but the Soviet Union eventually backed down.
