Mexicans were angry about the close ties between U.S. business and the Mexican government. (APEX)
Answer:
Permanent settlements led to population increases. As populations grew, societies became more complex, as well as some social institutions that are older than civilization, but that fully developed in early civilizations: division of labor, social hierarchy, and even slavery.
In other words, as early civilizations became more complex, the relative egalitarianism of nomadic and semi nomadic societes disappeared.
The goal was to find food
