ˌɔn sɛptˈɛmbɚɹ ˈeɪtiːn, wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd tˈɛn, hiː ɐsˈuːmd ðə pɹˈɛzɪdənsi ʌvðə fˈɜːst nˈæʃənəl ɡˈʌvɚnmənt dʒˈʌntə ʌv tʃˈɪli, bᵻkˈʌmɪŋ ðɪ ɪnˈɪʃəl lˈiːdɚɹ ʌvðɪ ɔːtˈɑːnəmˌɪst mˈuːvmənt ðæt ᵻvˈɛntʃuːəli lˈɛd tə tʃˈɪliz ˌɪndᵻpˈɛndəns.
On September 18, 1810, he assumed the presidency of the First National Government Junta of Chile, becoming the initial leader of the autonomist movement that eventually led to Chile's independence.