"Team of Rivals" is a biography by Doris Kearns Goodwin that explores the leadership style of Abraham Lincoln during the American Civil War. The book focuses on how Lincoln brought together a diverse group of political opponents to form his cabinet, demonstrating his ability to manage differing viewpoints and foster collaboration. The narrative highlights key figures such as William H. Seward, Edwin M. Stanton, and Salmon P. Chase, illustrating their relationships with Lincoln and each other. Goodwin emphasizes Lincoln's empathy, strategic thinking, and commitment to unity, which ultimately helped him navigate the challenges of a divided nation.