Where is the south island in the gun fungus and steel?

The South Island in Gun Germs and Steel is Madagascar. Book Review: There are five races in Africa, and only two races are in Africa. From botany, archaeology, especially linguistics, we can see that North Africa, influenced by the Mediterranean, is mainly white and the most developed. Bantu people occupy most of the south-central region, but only a few African aborigines exist in harsh environment. What is particularly surprising is that Madagascar's language is Austronesian, with blacks and Austronesian mixed in race, but there is no trace of Austronesian on the African continent. Why did Europe occupy Africa instead of Africa occupying Europe? The reason is the same as Europe's occupation of the New World. The domestication conditions of wild animals in Africa are not as good as those in Eurasia, especially animals. The east-west trend leads to great environmental changes, and the Mediterranean climate is not suitable for animals and plants to survive south of the equator. The backwardness of grain production leads to the slow spread of technology and words. Africa itself had a large-scale population migration before the15th century. Bantu people occupy most of southern Africa because of their more advanced agriculture and the technical, weapons and political advantages it brings, while other ethnic groups only survive in harsh environment.