This article examines The Political Economy of Infrastructure Investment: Roads, Ports, and Economic Integration: Applied to the Greater Horn of Africa with a focused emphasis on Somalia within the field of African Studies. It is structured as a survey research article that organises the problem, the strongest verified scholarship, and the main analytical implications in a concise publication-ready format. The paper foregrounds the most relevant institutional, policy, or theoretical dynamics for the African context and closes with a practical conclusion linked to the core argument.