The Mesopotamia has a good farm land that can feed all its population bringing in more people making it easy to feed more people because of the farm land they have. They created things like farming and irrigation so that they are suited for growth.
The proper technology has to be produced so that not everyone has to farm for food. And technology must be produced so that you are coming out with a net profit in the case of mass manufacturing
It helped open up China for trade with all sorts of different countries because their borders were currently closed to trade before the opium wars.
Answer:
Human groups became larger as they acquired new sources of foods. These new sources of foods allowed them to be able to support larger populations.
From hunter-gatherers, they became pastoralists, and from pastoralists, human gruops became farmers, when they learned how to practice agriculture.
Agriculture produced food surpluses, which led to the development of even larger human groups, and finally, civilizations.