The first American civilizations began

to emerge around 1200 BCE with the development of complex societies in Mesoamerica and the Andes regions. These civilizations included the Olmec, Maya, Aztec, and Inca, among others. These early civilizations were characterized by advanced agricultural techniques, sophisticated social hierarchies, monumental architecture, and complex religious beliefs and practices. They laid the foundation for the later development of more advanced civilizations in the Americas.