Railroad Expansion examines the profound and often disruptive impact of railroad expansion in the Americas, focusing on its role in economic development, migration patterns, and the displacement of indigenous populations. The book argues that while railroads spurred economic progress, this growth came at a significant social and environmental cost. For example, railroad construction facilitated the transportation of goods and resources, enabling industries like agriculture and mining to flourish, but simultaneously encroached on native lands, leading to conflicts and forced displacement. The book adopts an interdisciplinary approach, drawing from economic history, Native American studies, and environmental history to offer a holistic understanding of the railroad's multifaceted impact. Beginning with the technological and financial aspects of railroad construction, the study progresses through the economics of railroad development, demographic shifts, and conflicts with indigenous tribes. The book concludes by assessing the long-term legacy of railroad expansion on the social, economic, and geographical landscape, providing readers with a nuanced perspective on this pivotal period in history.