Targum Pseudo-Jonathan on Genesis 10:7 lists the sons of Kush, the son of Cham, and then spins out a gazetteer the Hebrew does not provide. Seba, and Havilah, and Sabta, and Raama, and Sabteka, and the name of their provinces, Sinirai, and Hindiki, and Semadi, and Lubai, and Zingai. And the sons of Mauritinos, Zmargad and Mezag.
Look at what the Targum identifies. Hindiki — India. Lubai — Libya. Zingai — Zanj, the East African coast of the Indian Ocean. Mauritinos — Mauritania. The Aramaic turns a genealogy into a world atlas, pointing to lands that formed the southern rim of the known world in late antiquity.
This is theologically important. Cham's descendants, in Torah's imagination, settle the African continent and the maritime routes that would one day carry trade from India through East Africa. The Targum does not hide this. Every continent has a Noah's grandson at its root.
Jewish ethnography, as preserved in Pseudo-Jonathan, refuses to imagine any nation as an orphan. Even peoples who later rose up against Israel are given a family tree that starts in the ark.
The takeaway the Maggid pulls from this verse: Torah's map is bigger than Israel. The same Noah who built the boat is the grandfather of the sailor in Zanzibar and the merchant in India. One family, many provinces.