The twelfth century witnessed

- tremendous intellectual optimism and energy all across europe
- greek replacing latin as the international language of speech and writing
- the solution of discrepancies between classical philosophy and christian theology
- the discovery of the new world

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