What is The rule of occupation?

The rule of occupation is a principle in international law that pertains to territorial acquisition, stating that a state can claim sovereignty over uninhabited or unclaimed land by taking effective possession of it. This involves demonstrating control through physical occupation, administration, or governance. The rule emphasizes the importance of actual presence and intent to govern, distinguishing it from mere discovery or exploration. It is often associated with the legal frameworks governing colonial expansion and land claims.