[ 365 ] Geography and the World GED ® TEST SOCIAL STUDIES FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Is it reasonable to conclude that cattle were used for plowing before horses were? a. No, because horses were domesticated before cattle were. b. No, because cattle were still wild when plowing was introduced. c. Yes, because horses were not yet domesticated when plowing was introduced. d. Yes, because cattle were more common than horses were. Which statement based on the diagram is an opinion rather than a fact? a. The wheel was invented long after people settled down in villages. b. Dugout canoes preceded sailboats by thousands of years. c. Olive trees and fruit trees were first cultivated around 5000 B.C. d. Irrigation was the Neolithic era’s most important innovation.