"Half of a Yellow Sun" is a historical novel by Nigerian author Chimamanda Ngozi Adichie. Set during the Nigerian Civil War in the late 1960s, the story follows the lives of three main characters: Olanna, Odenigbo, and Ugwu. Through their experiences, the novel explores themes of love, loyalty, and the impact of war on personal relationships. The title refers to the symbol of the Biafran flag, representing the short-lived Biafra republic. The narrative delves into the complexities of identity, culture, and the struggle for independence, providing a poignant reflection on the consequences of conflict in Nigeria's history.