This chapter examines the rise of modern international order. It begins with a discussion of international orders before the modern period, focusing on how trade and transport helped to link diverse parts of the world. It then considers debates about the 1648 Peace of Westphalia, along with nineteenth-century developments such as industrialization and imperialism. It also explores the main ideas that underpinned modern international order, the ‘shrinking of the planet’ that arose from the advent of new technologies, the emergence of intergovernmental organizations and international non-governmental organizations, and the advent of a radically unequal international order. The chapter concludes with case studies on the dual character of international law and imperialism in China.
