Select all that apply. What characteristics did each of the ancient civilizations have in common?

They did not establish trade routes.
They were found in fertile river valleys.
They believed in many gods.
They were located in Mesoamerica.

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