<span>(C)The Soviet Union and East German government collapsed.
After or Close to the collapse of the USSR, many East Germans secretly moved into West Germany, for the economy of East Germany was failing, and they didn't have as much 'freedom' as the Western side. Because of it's lowering population and the weakening of the USSR, East Germany decided to reunify with West Germany.
hope this helps</span>
The answer to your question will be 3
The rise of the Ottoman Empire
For 391 years, going from 794 to 1185, the real power in Japan was in the hands of the Fujiwara family (A option), they achieved that by monopolizing regent positions. The seize of power by abdicated emperors at the 11th century followed by the rise of the Samurais led to Fujiwara's gradual decline.