Topic summary
Ancient period
Extracted from the Wikipedia article Ancient history.
During the time period of ancient history, the world population was exponentially increasing due to the Neolithic Revolution, which was in full progress. In 10,000 BC, the world population stood at an estimated 2 million; it rose to 45 million by 3000 BC. By the Iron Age in 1000 BC, the population had risen to 72 million. By the end of the ancient period in AD 500, the world population is thought to have stood at 209 million. In 10,500 years, the world population increased by 100 times.