pˈaʊɛl θˈiəɹaɪzd ðæt sˈævɪdʒᵻz ɐdvˈænst ˌɪntʊ sˌɪvɪlᵻzˈeɪʃən wɪððə hˈɛlp ʌv ɹˈeɪʃəl ænd kˈʌltʃɚɹəl mˈɪksɪŋ.
Powell theorized that savages advanced into civilization with the help of racial and cultural mixing.