Charisma and propaganda--Reagan knew how to reach his audience and convince the American people they were in a state of danger and he had been able to keep them safe.
The Reagan administration focused on Cold War tactics first convincing American citizens they were unsafe in a world with communism and the USSR. He then developed military focus and propaganda to prove his leadership was keeping Americans safe. This with large tax breaks and a sense of conservative 'normalcy' made him very popular with the majority of white America.
The union attempted to blockade other southern states. By doing this the union thought they could cause the economy of the confederate states to collapse
Most scholars and scientists agree that modern humans originated in Africa.
Answer:
A. Events happening at the same time might have influenced one another.