Communism expanded. At the end of the war, North Vietnam conquered South Vietnam in 1975. The north and south united under one government. Communism spread and is one of the few remaining communist countries.
Feudalism started around 8th century or 850 AD to be exact. Based from all the choices given, there is no right answer. So probably the closest is 900 A.D so I would have to go with that. But if there is a choice that is 850 A.D, that is the correct answer. I hope this answer helped you.
Sitting Bull lead the Lakota Sioux in defeating Custer
The rulers of the Austria-Hungarian Empire had many fears about the war. The biggest fear they had was that they would have their government overthrown by a foreign invasion. This will make the answer C. The biggest fear that they had was their empire would be invaded and taken over by Germany. The correct answer is C.