african national congress asian people australian nationality law bantustan barbados nationality law belonger status black homeland citizenship act british overseas territories citizen british overseas citizen british nationality law british nationality law and the republic of ireland british protected person british subject canadian nationality law citizenship coloured commonwealth citizen demographics of south africa history of british nationality law history of canadian nationality law indefinite leave to remain indian nationality law malaysian citizenship maltese nationality law multiple citizenship nationality nationality law new zealand nationality law passport samoan nationality law singaporean nationality law south africa south african passport tongan nationality law uk ancestry entry clearance