What aspect of international affairs is part of USAFRICOM's mission?

USAFRICOM, or the United States Africa Command, focuses on enhancing the stability and security of African nations, which is reflected in strengthening their defense capabilities. This mission is vital because it aims to build strong partnerships with African nations and help them combat security challenges such as terrorism, piracy, and transnational crime. By assisting in the development of military forces and improving their capabilities, USAFRICOM contributes to regional stability and enhances the overall security environment in Africa.

Though promoting cultural exchanges, managing trade relations, and fostering tourism are important aspects of international relations, they are not the primary focus of USAFRICOM's mission in the context of maintaining security and defense. The command is primarily aimed at ensuring security cooperation and defense development, which underscores why the strengthening of defense capabilities of African nations is the accurate choice.