Complex sentence: Red pipestone is used by the Eastern Woodlands Tribes, Western and Great Basin Tribes, and the Plains Tribes, with sources of the stone in Tennessee (South Central), Minnesota (Pipestone), and Utah (Delta, Uinta).
Split into simpler sentences: Red pipestone is used by the Eastern Woodlands tribes, Western and Great Basin Tribes, and the Plains Tribes. The stone can be found in Tennessee (South Central), Minnesota (Pipestone), and Utah (Delta, Uinta).