Since How many years the civilization has been in existence?

Civilization, as we understand it, has been in existence for approximately 5,000 to 6,000 years, dating back to the emergence of early complex societies in Mesopotamia around 3000 BCE. This period marks the transition from nomadic hunter-gatherer groups to settled agricultural communities that developed cities, writing, and organized governments. However, human social organization has existed for much longer, with evidence of social structures among hunter-gatherers dating back tens of thousands of years.