H. erectus made its 1st foray out of Africa 2 MYA. Its descendants of numerous species – including Neanderthal and Denisovans – spread throughout Eurasia. Some likely returned to Africa, from which came the creatures that supposedly spawned modern humanity.
The human past was highly complex. Population movement, mixing, and local extinction were ubiquitous throughout. ~ paleoanthropologists Anders Bergström & Chris Tyler-Smith