The Pax Mongolica brought a period of stability among the people who lived in the conquered territory. The resulting stability brought by Mongol rule opened these ancient trade routes to a largely undisturbed exchange of goods between peoples from Europe to East Asia.
"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."
In general, history is the recorded story of the interaction between "ideas" "people" and "patterns", since it is the way in which people act and make decisions that influences their collective history.