Eli5:Why do countries in Asia have such high populations and high population densities?

Question

Eli5:Why do countries in Asia have such high populations and high population densities?

In: 6

Answer 1

The less energy you need to spend growing food the better. The river valleys in India, China, and SEA were able to grow more with less for thousands of years. This resulted in large and old civilizations where people just kind of added up over the years