eli5: Why do Asian countries have such high populations?

Question

What the title says. India and china alone have almost 3 billion. Asia has over half the worlds population. Why has this historically been the case even though many Asian countries developed far slower than European countries.

In: Other

Answer 1

Size of country. Great climate and finally, a man named Haber and his Haber process. These are effectively the reason Asian countries have such high populations.