The dominant motion along the fault is primarily horizontal, but some areas also have vertical motion
A democracy is what we are
The sun first rises at New York City
An anticline - it is in an arch-like shape and its oldest rocks are located at its core.
Answer:
The Great Plains had rivers which allowed various Native American tribes to camp along these rivers while they were following the buffalo. So again, the geography of the area provided this availability of food and places to stay and feed and water their horses.