What factors contributed to the emergence of nomadic communities?

The lack of territory influenced the fact that people became nomads. Lack of food, inappropriate climatic conditions also affected the move. The tribes lived in caves, they did not have permanent housing. Therefore, they often got sick and died. Resettlement was the only way to save their tribe. People who settled on the same territory constantly endured raids by barbarian tribes. Food, clothing, women and men were taken away from them. To avoid this, the tribes collected all their belongings and moved to other territories.