A profound "Crisis of Civilization" marked the first decades of the century: the references of space and time vanished with the vertiginous expansion of cities and industries, while a myriad of immigrants and former slaves were alleged to be threatening the country’s traditions. Brazilian elites blamed liberalism for such a "Crisis". Based on a decade of research, this book centralizes Brazilian history in liberalism and offers a genealogy of the jurisprudential and institutional struggles to correct the culture of laissez-faire. Using archival sources, it shows the direct U.S. influence on Brazilian thought and development. Recasting the history of legal ideas in the 20th century and providing novel interpretations on major political processes, it offers a rigorous and fresh look at the development of liberalism in the country. Covering five decades of history and offering a transnational approach involving the U.S. hegemonic role in Brazil, this book will be of interest to scholars and students of law, U.S. foreign policy, area studies and international relations.