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the common people. The Olmecs were the first city-builders in the Americas, but their
accomplishments were outdone by the achievements of the Mayans, who boasted dozens of
urban centers featuring bridges, aqueducts, and observatories, as well as a sophisticated system
of mathematics, a highly accurate calendar, and a written language.
Among the cultures that developed in the Great Plains, the Great Basin, the Subarctic and Arctic
regions, and in the Pacific Northwest, there was great cultural diversity. Great farming villages
developed along the tree-lined streams and rivers of the Great Plains, but other people in this
same region migrated with the seasons and relied for their survival almost entirely on hunting
bison. In the Great Basin, while men did track and trap certain animals for food, the staples of
their diet were seeds, nuts, and plants gathered by women.
Innovations and Limitations
While these first Americans created a tremendously diverse group of cultures, they shared a
common desire and ability to reshape their world. By experimenting with the resources around
them, they created farming breakthroughs that have sustained peoples around the world. Plants
domesticated by indigenous Americans, including corn, squash, potatoes, and beans, today
account for three-fifths of the world’s crops, and have revolutionized the world’s diet for better
and for worse. Native Americans also implemented more drastic changes in the landscape, from