How did society and American culture change after the civil war?

After the civil war there was no more slavery, so I believe there was a lot of tension between people that supported slavery and those that didn't. But the culture changed a lot, because from there on, African Americans started having more and more rights. That also paved the road for other races to also get rights, like Asians, Mexicans, Latinos, etc...

Explanation: The Civil War had a greater impact on American society and the polity than any other event in the country's history. It was also the most traumatic experience endured by any generation of Americans. At least 620,000 soldiers lost their lives in the war, 2 percent of the American population in 1861.

cuban communists pressured the soviet union to place missiles in cuba.

are their options?

otherwise i can't