What was the greatest cause of Paleolithic migration?

The greatest cause of Paleolithic migration was likely climate change and environmental shifts, which influenced the availability of resources such as food and water. As the Earth experienced cycles of glacial and interglacial periods, early humans followed animal herds and sought more hospitable habitats. This movement was driven by the need for survival, as groups adapted their lifestyles to changing landscapes and resource distribution. Additionally, the search for new territories and social interactions may have played a role in these migrations.