From 1776, when Citizen Tom Paine declared, "The birthday of a new world is at hand," America was unique in world history. A nation suffused with the spirit of explorers, constantly replenished by immigrants, and informed by a continual influx of foreign ideas, it was the world's first truly cosmopolitan civilization. In Beyond the Revolution, Pulitzer Prize-winning historian William H. Goetzmann tells the story of America's greatest...