This study examines the complex and diverse effects of U.S. foreign policy on Central America during the Cold War period, specifically concentrating on Guatemala and Nicaragua. The study investigates the historical events, documents, and academic literature related to U.S. operations in the region using a multidisciplinary approach. The research conducts a detailed analysis of the many motives and techniques utilized by the United States, such as containment measures against Soviet influence and strategic geopolitical considerations. The 1954 Guatemalan coup, orchestrated by the CIA, and the Nicaraguan revolution of 1961, characterized by the rise of the Sandinistas and subsequent Contra war, are significant examples that highlights the complex intricacies of U.S. interventionism. By contextualizing these events within broader historical frameworks and geopolitical realities, the research elucidates the complexities of Cold War-era relations between the United States and Central America. The methodology employed in this research involves a multidisciplinary approach, drawing on scholarly literature, primary documents, and academic databases. The geographical scope of the study encompasses Guatemala and Nicaragua, while the chronological focus spans from the early 19th century to the late 20th century, with a particular emphasis on events during the Cold War era. The demographic scope encompasses the populations of these countries and the various social and political actors involved in U.S. interventionism. Sources selected for this research include scholarly books, articles, and written materials providing historical context and analysis of Cold War-era interventions in Central America. Primary documents such as doctrines, CIA records, and official reports are also utilized to validate and contextualize historical narratives. Academic databases such as JSTOR, Cyberleninka, Cambridge.org, and ResearchGate serve as valuable resources for accessing a diverse range of scholarly literature on the topic. Consequently, the research also examines the enduring consequences of these actions, such as the establishment of authoritarian governance, violations of human rights, and socioeconomic inequalities. This research enhances the comprehension of the complex dynamics of U.S. involvement in Central America during the Cold War era by offering a thorough analysis of historical events and their lasting consequences. It provides understanding to the region's tumult h...