146. the rise of cities also stimulated
a) automated irrigation a possibility
b) the dovmfall of the whig party
c) a decrease in the spread of contagious diseases
d) a rising population in rural support areas of the nonheast
e) the spread of slavery to new england

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