Complex sentence: Caral is an important center of this civilization, and it was first fully documented and analyzed by Dr. Ruth Shady Solís and other Peruvian archaeologists in the late 1990s.
Split into simpler sentences: Caral is an important center of this civilization. Caral was first fully documented and analyzed by Dr. Ruth Shady Solís and other Peruvian archaeologists in the late 1990s.