hiː pɹəmˈoʊɾᵻd ɐ mˈɑːɹkɪt fɔːɹ jˌʊɹɹəpˈiən ɡˈʊdz wɪðˌɪn sˈʌðɚn ˈæfɹɪkə wˌɪtʃ wʌz pˈɑːɹt əvə tʃˈeɪndʒ ɪn tɹˈeɪdɪŋ fɹʌm bˈɑːɹɾɚ tə kˈɜːɹənsi.
He promoted a market for European goods within southern Africa which was part of a change in trading from barter to currency.