This collection of essays records the development of Adam Watson's thinking about international theory from the 1950s to the present, exploring his contribution to, and the development of, the English School. Adam Watson was one of the members of the British Committee on the Theory of International Politics alongside Herbert Butterfield, Martin Wight and Hedley Bull and a founding member of the English School. The committee developed a theory of international society and the nature of order in world politics, which have had an important impact on the discipline of international relations, providing a framework and research agenda for understanding international politics that continues to shape the discipline in the present day. "Hegemony & History" examines issues such as: the behaviour of states in international systems and societies; hegemony and empire; justice; non-state relations, including the economic involvement of communities and the role of other non-state actors; and, the increasing focus of international politics on individuals as well as states. The book will be of strong interest to students and researchers of international relations, political science, history and economics, as well as diplomatic practitioners and others concerned with international affairs.