What name was given to those northerners who came south during the reconstruction era?

the right answer is the end of world war ii

after the end of a global wwii all the nations involved, in an attempt to create an organization to maintain world peace. this agreement would work settling international disputes via negotiation and arbitration instead of leading the issues escalate to another war.

d. dr. francis collins

a. theta waves. this is because the person is in a light sleep which means the brain waves would show these kind of waves.