3) Cordillera is home to several indigenous peoples who have inhabited the region forthousands of years. The major groups include the Applai, Balangao, Bontoc, Ayangan,Gadang, Ibaloi, Iowak, Kalanguya, Isnag, Kalinga, Kankana-ey, Karao, Tuwali,Tingguian. Generally, these groupings are actually ___________ made through series ofanthropological studies to describe the peoples of this region though have evolved to bean accepted ascription.