Complex sentence: Further investigations by Hale, Gatschet, Mooney, and Dorsey proved that several other tribes of the same region were also of Siouan stock, while the linguistic forms and traditional evidence all point to this eastern region as the original home of the Siouan tribes.
Split into simpler sentences: Further investigations by Hale, Gatschet, Mooney, and Dorsey proved that several tribes of the same region were also of Siouan stock. The linguistic forms and traditional evidence all point to this eastern region as the original home of the Siouan tribes.