Evidence from the Agate Basin site in eastern Wyoming, for example, indicates that humans lived in the Plains at least as early as 8500 B. Radiocarbon dating of material from the Lewisville site near Dallas, Texas, suggests Indians and their precursors may have been in the Plains for at least 38,000 years.
The oral histories of some tribes refer to long-extinct mammoths and other megafauna.
At the same time, Shoshones moved east from the Great Basin to eastern Montana.
Separating from the Hidatsas and Missouri River horticulture, the Crows migrated west to the Montana- Dakota area.
Make the "he" into a young woman and imagine romantic tragedies of forced marriage and unrequited love.Plains residents began experimenting with pottery and more sedentary villages at least as early as 2,000 years ago.