Before revision: The Inca forces then pushed the southern frontier of the empire into Northwest Argentina and Central Chile.Patterson 1987, 119
After revision: It is tought that the existence of "Chilean" placenames such as Loa, Calama, and Erqui (Elqui) in southern Bolivia reflect Incan population transfers.The Inca forces then pushed the southern frontier of the empire into Northwest Argentina and Central Chile.Patterson 1987, 119