* Just before Columbus, the island of Tenochtitlan-Tlatelolco contained a population roughly the same as that of the island of Hispaniola. It also contained ten times the population of the capital of the Inca empire.
* The Japonic-speaking Korean farmer settlement of the islands of Japan, which finally brought agriculture to those islands, took place after the end of the Western Zhou and during the rise of the first Korean kingdoms. Both the Koreanic and Japonic-speaking Koreans were, unlike the Chinese, speakers of a non-Sino-Burman language, but the language families, if they have any common origin at all, diverged exceedingly long ago. The Japonic language family split up from the late first millennium BC. The Jomon predecessors of the modern Japanese had a small (Cambodian-level), but noticeable amount of Melanesian ancestry, but were well within the East Asian racial cluster. The Ainu, the group carrying the largest proportion of Jomon ancestry, may preserve some trace of the Jomon language in their language.
*Of the four great empires of India from 322 BC to 1947 AD, only one was Hindu. Two were Muslim, one was Christian, and one was Buddhist.
*The first people in Madagascar were not Black. They were Austronesian. The Austronesians began their migration out of Taiwan only after the unification of Egypt under Narmer.