which statement best describes the status of African american in the post reconstruction era after 1877

Ineed to have answers for numbers 2-4 reply to this question

How were the okanogan highlands formed? a. by subduction, which caused huge folds in earths surface b. as a result of retreating glaciers carving great valleys into the earth c. when molten rock from under the earth approached the surface d. when the collision of volcanic island chains and ocean rocks formed new earth

What was the purpose of the federal reserve system