Recommend a label that fits the author of this passage

How w.e.b. dubois wanted to improve the social and economic situation that existed for african americans during the early 19th century?

Which of the follow modern activities would only have been possible after the neolithic revolution

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