Between 60,000 to 18,000 BC, the first people migrated to the Americas and settled in an area known as ____
, a cultural and agricultural region for those early civilizations. The earliest civilization, the Olmec, was led by
. The Aztec civilization used___
as a way to expand their farming area. The Incan people built a vast network of roads, all of which led to the capital city of
. In North America, the Adena and Hopewell would build large, earthenware ___
, which served as temples, burial grounds, and defensive areas.
