Diversity In Early Agriculture

In the different places where agriculture developed, people domesticated a wide variety of plants and animals. Agriculture in the Tigris an Euphrates river valley of SouthWest Asia was based in growing wheat and barley and on raising sheep, goats, and cattle. Throughout the Nile Valley in North Africa, agriculture produced wheat, barley, flax, sheep, goats, cattle and pigs.
Meanwhile, in the Americas, early farmers began growing beans and chili peppers in the mountain valleys of what is now Peru and potatoes in what is now Bolivia. Plants later domesticated in the Americas included squash, gourdsm guavas, and maize orcorn.
At the begining, agriculture offered another way besides hunting and gathering for people to subsist, or survive. In many places agriculture led to year-round villages and more complex societies. People did not always stay in one place, however. Many groups went migrating, searching for new land for their crops and fresh pastures for their herds.

1. Clearing forest land today affects the environment just as clearing wild plants did long ago. What were the effects then? What are the effects now?
2. How did people in our society cooperate in day-to-day living?
3. What is meant by diversity of agriculture?