Hunter-gatherers lived by hunting wild animals, catching fish, and gathering plant produce. They moved constantly due to four reasons:
- Resource Exhaustion: Staying in one spot depleted available plant and animal resources.
- Following Animal Movements: Animals moved in search of prey, grass, or water, requiring hunters to follow their tracks.
- Seasonal Plant Cycles: Plants and fruit trees bore harvest in specific seasons.
- Water Availability: Perennial rivers had water year-round, but seasonal rivers dried in summer, forcing migrations.