Whites and free blacks from the North were most often the teachers in Freedmen's Bureau schools.
Freedmen's Bureau was a sort of a shelter from former slaves who had nowhere else to go to. They could come to the Bureau and stay there, get some food and clothing, and later, even education. Schools were opened in the Bureau, and many white people from the North (as well as educated black former slaves) came here to educate them.
I think the answer is : Negative feedback loop
Example of a negative feedback is when your body temperature somehow increased because of the weather, your body will create sweat to lower your body temperature
hope this helps
I think it is OU, i typed it all out and it showed “ OU “