PREVIEW: Chimamanda Ngozi Aichie by The World published on 2013-05-22T19:36:22Z A Nigerian writer sets her new novel in the U.S. It features a Nigerian-born heroine who, much like herself, is a keen observer of America's racial divide. CLIP: I had been making all of these observations, and I wanted very much to write about race, because I came to the U.S. And became fascinated by race. It was such a new thing to me. Author Chimamanda Ngozi Aichie, and the latest news. Next time on The World.