Complex sentence: Chief Turkey Tayac was a prominent figure in the early and mid-twentieth century cultural revitalization movements not only among the Piscataway, but also among other remnant Southeastern American Indian communities, including the Lumbee, Nanticoke, and Powhatan Indians of the Atlantic coastal plain.
Split into simpler sentences: Chief Turkey Tayac was a prominent figure in the early and mid-twentieth century cultural revitalization movements not only among the Piscataway, but also among other Southeastern American Indian communities. These include the Lumbee, Nanticoke, and Powhatan Indians of the Atlantic coastal plain.