Complex sentence: Eventually, the Piscataway-Conoy Indians, Inc. opened the Piscataway Indian Center to revitalize American Indian identity not only for people of Piscataway heritage, but also for other Native Americans living in the region.
Split into simpler sentences: Eventually, the Piscataway-Conoy Indians, Inc. opened the Piscataway Indian Center. They wanted to use it as a place to revitalize American Indian identity for people of Piscataway heritage, and for others of Native American descent in the region.