This author controversially withdrew her endorsement of a novel about a girl who develops the alternate selves (10[1])Asụghara and Saint Vincent titled Freshwater. A novel by this author, where a woman burns her lover's manuscript "The Basket of Hands," ends with the dedication for the book The World Was Silent When We Died. A character created by this author tries to marry Cleotilde for a green card. A novel by this author opens with the protagonist, who calls her old flame "Ceiling," going to Trenton to get her hair braided. Richard Churchill pursues Olanna’s twin in a novel by this author whose title references the flag of Biafra. This author created Obinze and the author of the blog “Raceteenth,” Ifemelu. For 10 points, (10[1])name this Nigerian author of Half of a Yellow (10[1])Sun and Americanah. ■END■