Greece

Greece preserves one of the longest records of human presence in Europe, with fossil evidence from Apidima Cave on the Mani Peninsula indicating that early Homo sapiens reached the southern Balkans by at least 210,000 years ago. These cranial remains, described by Harvati and colleagues in 2019, predate other Eurasian sapiens fossils by tens of millennia and suggest that our species briefly occupied the region before Neanderthal populations predominated during subsequent glacial cycles. Additional Middle Paleolithic sites such as Kalamakia and Lakonis document repeated Neanderthal occupations, while Upper Paleolithic layers at Franchthi Cave track the arrival of anatomically modern foragers who exploited coastal and marine resources as climates warmed after the Last Glacial Maximum.

The Neolithic transition reached Greece around 7000–6500 BCE through maritime routes across the Aegean from western Anatolia. Ancient DNA from sites including Revenia and Paliambela shows that the first farmers carried predominantly Anatolian Neolithic ancestry with minimal local hunter-gatherer admixture, supporting a model of demic diffusion rather than simple cultural adoption. Over subsequent centuries these communities expanded northward into the Balkans, establishing tells and long-lived villages whose pottery and obsidian exchange networks link the Aegean to both Anatolia and the central Mediterranean.

During the Bronze Age, two distinctive societies emerged. Minoan Crete displays strong genetic continuity with the preceding Neolithic population and little steppe-related ancestry, whereas Mycenaean mainland groups, sampled in the landmark 2017 study by Lazaridis and colleagues, exhibit roughly 10–20 percent Yamnaya-related admixture alongside their Anatolian farmer base. This genetic signal coincides with the appearance of Indo-European languages on the peninsula and with archaeological evidence for new burial practices and elite material culture, although the precise timing and scale of steppe migration remain subjects of ongoing debate.

In the ensuing Iron Age and Classical periods, Greek-speaking populations established colonies from the Iberian Peninsula to the Black Sea, creating a diaspora whose genetic and cultural footprint is detectable in later Sicilian, southern Italian, and Anatolian genomes. While textual sources describe migrations such as the so-called Dorian movement, ancient DNA currently offers limited resolution on these events, leaving open questions about the relative contributions of migration, elite dominance, and language shift. Overall, Greece functioned as both a destination and a conduit for successive population movements that shaped the genetic and cultural landscape of Europe and the eastern Mediterranean.