What is meant by a sphere of influence?

A sphere of influence refers to a geographic area or domain where a particular entity, such as a country, organization, or individual, exerts significant control, influence, or authority over political, economic, or cultural matters. This concept is often used in international relations to describe how powerful nations can dominate weaker ones without direct formal control, impacting their decisions and policies. Spheres of influence can shape alliances, trade relationships, and regional stability.