US History: Early America
Most authorities believe that the Western hemisphere was populated at the end
of the last ice age when a lowered ocean level exposed a land bridge that Asian
peoples traversed to North America. Later, the arriving European settlers
discovered the existence of extensive civilizations. In the southern reaches of
North America (present-day Mexico and Central America) the Mayan civilization
built sophisticated stone structures, developed an advanced numerical system
and maintained extensive agricultural complexes. The Aztecs established a
far-reaching empire that controlled much of present-day Mexico.
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Chad S. Lowman | chris.longm...@trendzresearch.org | 2174, Carolyns Circle,
Arlington, TX 76011 | 214-770-2525
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