From Africa, homo sapiens spread out across the earth. For over two million years, the way of life of hunter-gatherers changed very little. Change came around 11,000 BC, when the climate became warmer and drier. They learned how to grow their own crops of these grains. This is called crop cultivation or arable farming. They also managed to tame and keep wild animals; sheep and goats first, and later, cows as well. The transition from hunting and gathering to farming is called the Neolithic Revolution.
The first transition to an agrarian society took place near the river Nile in Egypte and the rivers Euphrates and Tigris in present-day Iraq. This region is called the Fertile Crescent. The emergence of agriculture had three consequences:
- The people in the Middle East gave up their nomadic lifestyle. The grain they grew and the meat and milk from their animals were enough to live on, so they settled in one area instead of travelling around.
- Because there was enough food, the population grew. And because more people lived in one area, the number of huts grew too. There was enough time to build better huts. Small settlements grew into villages.
- Because there was enough food, not everybody had to work on the land anymore. This led to a new division of labour in the villages. Some people became artisans: they learned a specific craft, specialising in basket weaving, smithing, or baking. This is called specialisation of labour.
And it took thousands of years for agriculture to spread to other areas of the world. Today, small groups of people are still living as hunter-gatherers in the rainforests of South America and in Africa and Asia.