They moved out of the foothills and into the plains (near rivers). The rivers provided more opportunities for food growth.
The Middle Kingdom designates a period of ancient Egyptian civilization stretching from approximately 2030 to 1650 B.C. (Dynasty 11 through Dynasty 13). During this era, the cultural principles set out at the beginning of Egyptian civilization and codified during the Old Kingdom were reimagined, including the ideology of kingship, the organization of society, religious practices, afterlife beliefs, and relations with neighboring peoples. These transformations are attested to in architecture, sculpture, painting, relief decoration, stelae, jewelry, personal possessions, and literature.
I beleive it began in Oklahoma. Hope this helps!
<span>The religious history of the United States began with the first Pilgrim settlers who came on the Mayflower in the year 1620. Their Protestant faith motivated their movement as a community to the New World from Europe where they could practice in peace. The Spanish set up a famous network of Catholic missions in California, but they had all closed long before 1848 when California became part of the U.S. </span>