 Cheta nabali 21 ọnwa Maach afọ a, onyeisiala Buahari kagburu ọgbakọ mba dị na Afrịka nke a na-akpọ, African Union AU ebe ọ kara ibinye aka na nkwekọrịta a ga-eji bidoAfrican Continental Free Trade Area. 