E. Diet, Nutrition, and Technological Innovations. Appear by 500 BC or earlier but not widespread until c. AD 500. Allow more efficient and longer food boiling, especially of dried foods like corn and beans that were stored. More plant material could be ground more quickly. Better for individual hunting of small game near sedentary villages.
Arrows are now smaller.
Roots of the Hohokam, Mogollon, and Anasazi A. By AD 700, northern, central, and southern traditions in ceramic styles appearing. But lack of sharp boundaries in artifact styles in general suggests that major social boundaries were lacking as well.