Complex sentence: Both the Indians of Person County/Sappony and the Haliwa-Saponi Tribe of North Carolina were at one time classified by some anthropologists as among groups known as tri-racial isolates, with European, African and Native American ancestry, to varying degree.
Split into simpler sentences: Both the Indians of Person County/Sappony and the Haliwa-Saponi Tribe of North Carolina were at one time classified by some anthropologists as among groups known as tri-racial isolates. They were observed to have European, African and Native American ancestry, to varying degree.