Who were the Adena the hopewell and the Mississippians?

The Adena, Hopewell, and Mississippian cultures were prehistoric Native American societies that thrived in North America. The Adena culture (circa 1000 BCE to 200 CE) is known for its burial mounds and earthworks in the Ohio Valley. The Hopewell culture (circa 200 BCE to 500 CE) succeeded the Adena, famous for its elaborate burial practices and extensive trade networks. The Mississippians (circa 800 CE to 1600 CE) developed complex chiefdoms, large urban centers like Cahokia, and sophisticated agricultural practices, marking a significant advancement in social organization and culture.