Answer:
Before the agricultural revolution, people were nomadic hunter-gatherers: they hunted for wild game, and gathered fruits and vegetables, cereals as well. They moved around a geographic area looking for new sources of food.
When people learned how to grow their own food, they became sedentary. They could now stay at the same place, and produce an amount of food that could support a larger population. With time, they developed civilizations where social institutions such as the division of labor, private property, and social hierarchy as were fully developed.