pˌiːˌɑːɹbˈiː wʌz ɪstˈæblɪʃt æz ɐ lˈɛft lˈiːnɪŋ pˈɑːɹɾi ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪfti sˈɪks ænd ˈeɪmd tə bɹˈɪŋ bɹuːnˈaɪ ˌɪntʊ fˈʊl ˌɪndᵻpˈɛndəns fɹʌmðə juːnˈaɪɾᵻd kˈɪŋdəm.
PRB was established as a left leaning party in 1956 and aimed to bring Brunei into full independence from the United Kingdom.