The modern British Commonwealth, linking fifty countries around the world in voluntary association, cooperation, and consultation, is a unique body in world history. The area of its member countries covers a third of the globe and collectively their peoples represent a quarter of the world's total population. Though essentially different from the British Empire from which it originated, the Commonwealth shares many common historical ties with Britain. Patricia M. Larby and Harry Hannam have assembled an unrivaled body of literature to illustrate the growth of the Empire into the...