Fix grammar errors in this sentence: That distinction in the early 21st century is held by the Norte Chico civilization of which the oldest ruins are dated at about 3500 BC at Huaricanga, south of Sechin Bajo.
That distinction in the early 21st century is held by the Norte Chico civilization of which the oldest ruins are dated at about 3500 BC at Huaricanga, south of Sechin Bajo.