The Fordney-McCumber Tariff of 1922 was a law that raised American tariffs on many imported goods to protect factories and farms. The US Congress displayed a pro-business attitude in passing the tariff and in promoting foreign trade by providing huge loans to Europe. That, in turn, bought more US goods
"The Sinagua were a pre-Columbian culture that occupied a large area in central Arizona from the Little Colorado River, near Flagstaff, to the Salt River, near Sedona, including the Verde Valley, area around San Francisco Mountain, and significant portions of the Mogollon Rim country,[1][2] between approximately 500 CE and 1425 CE."
It can change everything from the fact that if a human moves there then he will want a house, so what will he do? Build a house therefore cutting down trees and changing the habitat.