Complex sentence: There were then about 800 Northern Paiutes in settlements and at Forts Harney and Klamath in Southern Oregon, Fort Bidwell in northeastern California, and Fort McDermitt in northern Nevada.
Split into simpler sentences: There were then about 800 Northern Paiutes in settlements at Fort Harney. Other Paiutes were located at Klamath in Southern Oregon, Fort Bidwell in northeastern California, and Fort McDermitt in northern Nevada.