10.1.1 Early Hominin Migrations

Human species were migratory from the beginning, moving as small populations of gatherers and hunters within eastern and southern Africa. By following game and the availability of seasonal vegetation from place to place, these small groups of nomads learned about their landscape, interacted with each other, and met their subsistence needs. Their daily needs came through interaction with a changing environment. With the emergence of Homo erectus around 1.89 million years BP (before the present), hominins expanded their territories and began to exhibit increasing control over their environment and an ability to adapt, evidenced by the development of new subsistence systems, including cultivation, pastoralism, and agriculture, and an upsurge in migration within Africa and, eventually, into Asia and Europe. This expansion into new geographical regions was a hallmark of the later human species.

There are several theories on possible migratory sequences within and beyond the African continent. One possibility is that by 1.75 million years ago, Homo ergaster had begun migrating out of Africa, moving northward into Eurasia. Another theory argues that an earlier hominin species, either australopithecine or an early as-yet-unknown species of the genus Homo, migrated out of Africa around 2 million years ago, eventually evolving into the population of Dmanisi hominins who were settled in eastern Europe by 1.85 million years ago, possibly representing another link between H. erectus and H. ergaster. Although settlement dates are currently being retested and reexamined for precision (Matsu’ura et al. 2020), it is known that between 1.3 and 1.6 million years ago, H. erectus settled on Java, an island that is now part of Indonesia. They likely traveled there by a land route, as seas were lower during the Pleistocene Ice Age (approximately 2.588 million–11,700 years ago), allowing for more passage through interior coastal routes. (For more on early human migrations, see The Genus Homo Homo and the Emergence of Us.)

Regardless of the specific time frame and migration pattern, it is well established that there was gene flow between various hominin populations, which indicates that there were migration and exchange. With the migration of these early hominin populations, cultural practices and improvements in toolmaking spread as well. Wherever humans traveled, they carried with them their traditions, intermingling and reproducing both physically and culturally.