A.
The reason being said, after Julius Caesar, most leaders were corrupt and greedy, not to mention the fact that Rome was way too spread out for an empire. Another factor that contributed was that foreigners were invading Rome.
Caspar David Fredrich (answer A) is the painter of the Romantic movement who depicted wild, untamed landscapes,rocky seacoast and dark forests. He use to took the genre of landscape painting, which traditionally was considered unimportant, and infused it with deep religious and spiritual significance.
Answer:
the Mongols allowed free practice of religion whether it be Buddhism, Nestorian Christianity, Manichaeism, Daoism or Islam because this policy ensured an easier governance of conquered territories.
C. Containment
In general, historians have identified several different causes of the Vietnam War, including: the spread of communism during the Cold War, American containment, and European imperialism in Vietnam