Kungalokho kuqakathekile bona esikhathini esinjengalesi sigidinge iminyaka ema-20 wokwamukelwa komTlolo wesiVumelwano weKomidi yesikhatjhana ye-OAU ophethe iindaba ze-Afrika engeSewula , omayelana nemiBuzo ngeSewula Afrika eyamukelwa ngoRhoboyi womnyaka we-1989 - Ngokujayelekileko waziwa njengomTlolo wesiVumelwano se-Harare .