The demolition of the Berlin Wall became the symbol of the fall of the Soviet Union and the return to democracy for its republics and satellite nations.

The Federal Republic of Germany (commonly known as West Germany) was an ... As leaving East Germany became increasingly difficult, West Berlin, with its open ... of political confrontation between the United States and Soviet Union, whose ... at the wall, and its “fall” became yet another Cold War symbol

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.

c. mass = force / accellaration

step-by-step explanation: