High Quality Content by WIKIPEDIA articles! This is a list of Hopewell sites. The Hopewell tradition (also incorrectly called the "Hopewell culture") was the common aspects of the Native American culture that flourished along rivers in the northeastern and midwestern United States from 200 BCE to 500 CE. The Hopewell tradition was not a single culture or society, but a widely dispersed set of related populations that were connected by a common network of trade routes, known as the Hopewell Exchange System.