The document summarizes early northern societies in North America between 500 BCE and 1200 CE. It discusses the Adena and Hopewell peoples between 500 BCE and 500 CE who built large earthworks and mounds. The Mississippian culture developed between 800-1450 CE, building urban centers and mastering the bow and arrow. The Anasazi culture built pit houses and pueblos in the southwest between 500 BCE-1150 CE, practicing irrigation-based farming.