Conquering a New World
Conquering a New World
Pioneer Impacts
This chapter explains how the earliest human inhabitants reached America and modified the physical and biological environments of the rivers. Sedentary agricultural communities first appear in the archeological record of North America more than 2,000 years ago. As with agricultural people elsewhere in the world, these first farmers affected rivers more than their hunter-gatherer predecessors. The Hohokam of central Arizona developed an extensive system of more than 1,200 miles of irrigation canals diverting water from the Salt River between approximately
Keywords: coastal region, irrigation, woodlands, river corridors, beavers
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