Where civilizations started in the Ohio River Valley and eventually spread north throughout New England?

Civilizations in the Ohio River Valley, particularly Indigenous groups like the Adena and Hopewell cultures, developed advanced societies around 1000 BCE to 500 CE, known for their earthworks and trade networks. As populations grew and agricultural practices improved, these groups expanded their influence northward into regions that would become New England. The rich resources and favorable climate of the Ohio River Valley facilitated the movement of peoples and ideas, leading to the establishment of various communities throughout New England. This migration laid the groundwork for later historical developments in the region.