Humans were believed to be nomadic in the past. Their primary source of living was hunting and gathering so they had no permanent settlement. Though the reason was not very clear, humans eventually developed agrarian societies. People learned to cultivate lands and agriculture became their source of livelihood. This led to the development of technology in producing food. Eventually, they decided that some humans could work as farmers while others focused on other jobs like constructing structures and crafts. These developments continued and high technologies emerged, leading to the birth of civilizations. All of these contributed to how the world is today.
The earliest known civilizations were Mesopotamia in 5000-3500 BC and Indus Valley
The earliest known civilizations were Mesopotamia in 5000-3500 BC and Indus Valley