After farmers in the Fertile Crescent developed techniques to transfer water, people no longer needed to A turn to agriculture
B. settle next to a river
C. dig irrigation ditches
D. travel to southern Mesopotamia

Which of the following was probably the most difficult challenge facing construction of the railroad?

Which of the following is/are a major technological advances of the mayan civilization? a. the calendar c. math b. architecture d. all of the above

In the 1950s, the u.s. government encouraged american jazz musicians to perform in the soviet union, which was an enemy of the u.s. at the time. of what foreign policy goal is this a good example? strengthening world economic growth improving education for the global population advancing the growth of democracy and good government increasing understanding of american values and creating a receptive international environment