Answer:
Attitude towards the Negroes.
Explanation:
After the independence in America, slavery was considered illegal in the North as they were influenced by the ideas of John Locke that considered all men to be equal and free. The emancipation society in the North wanted to get over the system of slavery. The white Southerners succeeded in strengthening the institution.
Before the Civil War, the North continued to show their disinterest in the practice of slavery while the South continued to support it as it was part of their economy. Several compromises and laws were implemented to keep intact the slavery practices to expand in new territories.
After the Civil War, The South despite being losing the war tried to restrict the movement of African American as they were now freed. The KKK establish to terrorise the blacks. Segregation laws were implemented like Jim Crow Law.
The answer is either b or c
It changed because the united states didn't trust Soviet union after the second war tension was growing alot stronger between the united states and the Soviet and this ended up to lead to war which ended decades later
Hope this helps
There are five living presidents