This article examines South Sudan's Trade with Sudan and Uganda: Patterns, Constraints, and Development Potential with a focused emphasis on South Sudan within the field of Business. It is structured as a policy analysis 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.