This book explores the continuity of oligarchic rule in the Americas of the modern period, with a focus on the variable compatibility of oligarchic rule and democratic government. This focus sets the terms for a comparative inquiry that creates a novel perspective on the politics of Latin America and the United States alike. The continuity depends on the formation of a patrimonial State and a porous division between oligarchic interests and the public sphere of democratic politics; but it also depends on a capacity to adapt and change, and these changes are marked by successive and distinctive modes of rule in both Latin America and the United States. The book concludes with a description and comparison of the sequences and political characteristics of these modes of rule and discovers a recent and remarkable convergence of oligarchic rule in the Americas.