How does the origin of the word "revolution" help you better understand its meaning​

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

Made up of nato and cento a: communist countries b: democratic countries

Who does the article blame for the explosion on the u.s.s maine