Answer: C
If I remember correctly the Shang Dynasty built the Great Wall of China and were transitioning into making more discoveries like astrology and stuff like that..I hope I could help out a little bit!
Answer: Because they had never developed immunities to the disease
Many people did not agree with slavery in some states, which caused tension in many areas.
Answer:
The release of two atomic bombs on Japan in August 1945 helped end World War II but ushered in the Cold War, a conflict between the United States and the Soviet Union that dragged on nearly half a century. ... Cold War calculations led to a divided Germany and U.S. involvement in wars in Korea and Vietnam
