Well what are the choices? I could tell you but I should see the choices first.
Crop Growing -
When people first started growing crops, this enable them to stop living nomadic lives, where they had to go from food source, but stay at one location that enable them to grow crops which they needed to make food out of. Eventually, this had led to the formation of villages and ever bigger urban areas.
- hope that this helps -
Answer:
C) led to an increase in the population of American cities.
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.