We are pleased to offer this compilation of chapters which comprise important concepts, ideas, and theories in intergovernmental relations. So often, the notions of federalism, intergovernmental relations, and intergovernmental management are treated separately in the literature without attempting to draw out important connections between them, both in terms of theory and practice. This tends to neglect the many interrelated influences that have collectively shaped the evolution of our system of government. Consequently, this book seeks to broach this shortcoming by opting for a broader and more comprehensive approach, in which we explore the many of intergovernmental relations that have made it a facet of our nation's dynamic federal structure, and a significant impetus in the development of intergovernmental managerial techniques.