revision preference src: The K'iche' tended to place their newly installed ruling elite in a mountain-top fortress securing the population in the valleys below. Substantial portions of the original Mam population remained in place in the plateau area. <SEP> tgt: The K'iche' tended to place their newly installed ruling elite in a mountain-top fortress securing the population in the valleys below. However, substantial portions of the original Mam population remained in place in the plateau area.