Answer:
In order for Stone Age people to survive, they had to move with these herds of animals. Old Stone Age people were always on the move. A person who moves from place to place is called a nomad. Because of their nomadic lifestyle, Old Stone Age people built temporary homes, rather than permanent homes.
Explanation:
They made teepees because they were nomads. (a nomad is a member of a people having no permanent abode, and who travel from place to place to find fresh pasture for their livestock.) Teepees were easy to set up and put away for traveling purposes. Teepees were made out of stretching buffalo skin over a skeleton of 20-30 wooden poles, all slanted towards a central point and tied together near the top. A flap at the top allowed smoke to escape, and a flap at the bottom served as a doorway.