What group of indigenous people followed the Foragers?

Interpreting the results of his experiment : )

One of the things that allowed native americans in mexico to settle cities larger than those in areas to the north was "b. the development of cities that were built by an earlier civilizations," since mexico had been the home of some of the world's most advanced civilizations before the columbian invasion

The  most important advantage  of  northeast china  that  mainly contributed toward its being  the  industrialand  technological center  of the  country  in the  1970s  and  1980s  is:   its  juxtaposition with china's  most important industrial  neighbors.