Question

Why did people migrate south in the early stages of Africa from around 3000 B.C.?

Answer 1

Answer:

Around 1.9 million years ago, Homo erectus migrated out of Africa via the Levantine corridor and Horn of Africa to Eurasia.

This migration has been proposed as being related to the operation of the Saharan pump, around 1.9 million years ago.

Answer 2

Early human migrations are the earliest migrations and expansions of archaic and modern humans across continents and are believed to have begun approximately 2 million years ago with the early expansions of hominins out of Africa of Homo erectus. This initial migration was followed by other archaic humans including H. heidelbergensis, which lived around 500,000 years ago and was the likely ancestor of both Denisovans and Neanderthals. Early hominids were said to have "crossed land bridges that were eventually covered in water" (History Alive, pub. 2004, TCI).

Within Africa, Homo sapiens dispersed around the time of its speciation, roughly 300,000 years ago.[note 1][3] The recent African origin paradigm suggests that the anatomically modern humans outside of Africa descend from a population of Homo sapiens migrating from East Africa roughly 70–50,000 years ago and spreading along the southern coast of Asia and to Oceania by about 50,000 years ago. Modern humans spread across Europe about 40,000 years ago.

Early Eurasian Homo sapiens fossils have been found in Israel and Greece, dated to 194,000–177,000 and 210,000 years old respectively. These fossils seem to represent failed dispersal attempts by early Homo sapiens, who were likely replaced by local Neanderthal populations.