Prehistoric Periods & Environmental Context
Three Stone Ages (Lithic Periods):
- Paleolithic (Old Stone Age): earliest period; hunter-gatherers; small groups; survival paramount
- Mesolithic (Middle Stone Age): transitional period
- Neolithic (New Stone Age): emergence of agriculture, settlement, animal husbandry
Environmental Shifts:
- European ice ages (glacial periods)
- Saharan grassland → desert
- Lower glacial sea levels exposed Southeast Asian land bridges, facilitating migration toward Sahul (Australia and New Guinea) by about 45,000 years ago.
Key Principle: Human behavior and artistic expression were shaped by changing environments and survival strategies.



