- The Andes provided a harsh environment for the Chavín, Nazca, and Moche civilizations.
- The Olmec and Maya lived in fertile land in Mesoamerica.
- Trade helped spread Olmec culture throughout Mesoamerica.
- Ancient Americans left behind beautiful carvings, pottery, and textiles.
- The Maya built pyramids and temples in their great city-states.
Science and Technology
- The Moche created irrigation systems.
- The Maya developed a calendar and the concept of zero.
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