KnowraSphere of influenceLinked fromLinked fromThe 14 pages that link to Sphere of influence, each with the reason it gives.All 14Related 6Narrower topic 4Compared with 4Truman DoctrineCompared with: Roosevelt-era realism accepted such divisions; the doctrine rejected them as immoral and unworkable.Hill sphereCompared with: It serves a similar practical purpose but uses a different approximation from the Hill sphere.ColonizationCompared with: Influence can constrain a territory without the direct control characteristic of colonization.Vassal stateCompared with: Influence can constrain a polity without the explicit allegiance associated with vassalage.