The Ideas That Made America: A Brief History by Jennifer Ratner-Rosenhagen delves into the intellectual foundations that shaped the United States. From the initial European explorers to contemporary thinkers like Richard Rorty, this book explores how ideas have driven American history and culture. Spanning diverse fields such as religion, philosophy, political thought, social theory, and the arts, Ratner-Rosenhagen examines pivotal figures including Thomas Jefferson, Ralph Waldo Emerson, W.E.B. DuBois, Jane Addams, Betty Friedan, and more. The narrative covers significant historical events from the Civil War to the present-day culture wars, highlighting the enduring impact of these ideas on American identity and societal progress.