How can the term "revolution" be applied to "thought", and not just Violent Conflict?

Why did many members of congress oppose president lincoln’s plan for reconstruction? a. they believed that freed blacks had gained too much power. b. they thought that the plan was too harsh on confederate sympathizers in the north. c. they thought that the president had overstepped his powers.

Agerman mapmaker named a continent after me

In a citizens elect the president as head of government separate loy from the legislature