1921-1996 africancontinentalancestrygroup afrique ashanti(africanpeople) babinga(africanpeople) biography bokassa cameroon cognition cognitionandculture cognitivestyles commerce commerciallaw congo(democraticrepublic) cross-culturalcomparison dar-al-kuti dictators drum economicpolicy exiles familybokassa france gabon ghana headsofstate history instructionandstudy instrumentsàpercussion investments lawandlegislation marie-france methods music méthodes ngandu(africanpeople) peace-building percussioninstruments politicsandgovernment politicsandgovernmtne princesses psychology recordedaccompaniments slavetrade smallbusiness tambour violence