What are some effects of the civil war on the united states as a whole? Will mark brainliest-please help

Which of following most accurately describes china today?

At the time of the brown v. board of education decision,schools were segregated everywhere in the country.several states had laws requiring segregated schools.schools in nearly every state has been desegregated.segregation was common in the north, but not in the south.

What was one of the causes of war war two what was one of the causes of the war of 1812