This book examines how the United States adopted and contributed to the practices of international society—the habits and practices states use to regulate their relations—during the nineteenth century. Expert contributors consider America's "entry" into international society and how independence forced it to enter into diplomatic relations with European states and start a permanent engagement with a society of states. Individual chapters focus on U.S. perceptions of the international order and its place within it, the U.S. position on international issues of that period, and how America's perceptions and positions affected or were affected by the habits, practices, and institutions of international society. This volume will serve as an invaluable text for undergraduate courses focusing on international relations theory and U.S. foreign policy. It will also appeal to established scholars in international relations, diplomacy, and international history and historical sociology.