The book shows that from the last two decades of the twentieth century and the end of the Cold War in 1991, a shift occurred in inter-American geopolitics as the United States emerged as the dominant global structural power. The post-Cold War international relations and new geopolitics are predominantly driven by geoeconomic rationales and outclass the old Cold War geopolitics overwhelmingly dominated by state politics and security strategies. The post-Cold War geopolitics is largely tied to globalization as integrated flows laying out various interrelated social, economic, political, and geographical networks in the Americas. As a result, the book states that the geopolitics of globalization sparks a geo-sociology and politics of scales, shaping political geography and internal-external politics and policies through the causes and effects of free trade areas, transnational migrations, human settlement patterns, ethnocultural, and demographic changes, city growth, and urban governance challenges. As well as discussing the issues of migration and cities, the book merges territoriality, geopolitics, and globalization in the broader existing theoretical literature and analyzes the implications for the research community at large. As such, it appeals to students, academics, policy makers, journalists, activists, and globalists looking for fresh thinking in the interplay of globalization and geopolitics in an era of global migration in global cities.