In the great plains one of the most important resources was bison. Since they were so important the tribes followed the bison migration and lived in tepees since they were the easiest to build. This shows one of the tribe members reporting that the bison are on the move and it is time to migrate.
In this photo it is showing the tribe migrate. (there was no bison so i used a bear)
In this photo the tribe is in the new land with the bison and they have there new tepee done and are completely migrated. Until the next time the bison move.