ONCE, IN THE MIDST of negotiations for the Paris Peace Treaty, John Adams had predicted that thirteen United States would one day “form the greatest empire in the world.” It was a faith he had first expressed at age nineteen, when a fledgling schoolmaster at Worcester, writing to his kinsman Nathan Webb; and it remained a faith no less in 1789, for all the skepticism and derision he had heard expressed abroad, and despite the many obstacles confronting the new nation.