Complex sentence: Today, most Natchez families and communities are found in Oklahoma, where the Natchez Nation is a treaty tribe, and members are also enrolled in the federally recognized Cherokee and Muscogee (Creek) nations.
Split into simpler sentences: Today, most Natchez families and communities are found in Oklahoma, where the Natchez Nation is a treaty tribe. Members are also enrolled in the federally recognized Cherokee and Muscogee (Creek) nations.