When historians take the long view, they look at ""ages"" or ""eras"" (the Age of Jackson, the Progressive Era). But these time spans last no longer than a decade or so. In this groundbreaking new book, Morton Keller divides our nation's history into three regimes, each of which lasts many, many decades, allowing us to appreciate, as never before, the slow steady evolution of American public life. Americans like to think of our society as eternally young and effervescent. But the reality is very different. A proper history of America must be as much about continuity, persistence, and evolution