Why do India and China have so many people? (The link does not seem to be working. It is Balaji Viswanathan's article in this https://www.quora.com/Why-are-countries-like-India-and-China-so-densely-populated-What-are-the-circumstances-and-reasons or search the title, via Pramathnath Sastry)
Abstract: India and China together hold 20% of world’s arable land (land suitable for a major crop), producing 50% of the world’s rice and 30% of the world’s wheat. They are spread around the Tropic of Cancer (a great zone for human settlement), were unified multiple times in the past (leading to a large land area under one flag), got to the major cereals earlier (rice & wheat), got the benefit of other civilizations nearby (borrowing ideas of wheel & writing systems) and were spared from many of the major human calamities & migrations of history.
Abstract: India and China together hold 20% of world’s arable land (land suitable for a major crop), producing 50% of the world’s rice and 30% of the world’s wheat. They are spread around the Tropic of Cancer (a great zone for human settlement), were unified multiple times in the past (leading to a large land area under one flag), got to the major cereals earlier (rice & wheat), got the benefit of other civilizations nearby (borrowing ideas of wheel & writing systems) and were spared from many of the major human calamities & migrations of history.
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