In general, expansionism consists of expansionist policies. While some have linked the term to promoting economic growth (in contrast to no growth / sustainable policies), more commonly expansionism refers to the doctrine of a nation's expanding its territorial base (or economic influence) usually by means of military aggression. Economic growth is the increase in the amount of the goods and services produced by an economy over time Sustainability, in a general sense is the capacity to maintain a certain process or state indefinitely In Psychology and other social and Behavioral sciences aggression refers to behavior that is intended to cause harm Compare empire-building and Lebensraum. An empire (from the Latin " Imperium " denoting military Command within the ancient Roman government) is a State that ( German for " habitat " or literally "living space" served as a major motivation for Nazi Germany 's territorial aggression
Irredentism, revanchism or reunification are sometimes used to justify and legitimize expansionism, but only when the explicit goal is to reconquer territories that have been lost, or even to take over ancestral lands. Irredentism is any position advocating Annexation of territories administered by another State on the grounds of common Ethnicity or prior historical possession Revanchism (from French revanche " Revenge " is a term used since the 1870s to describe a political manifestation of the will to reverse territorial A simple territorial dispute, such as a border dispute, is not usually referred to as expansionism. A territorial dispute is a disagreement over the possession/control of land between two or more States or over the possession or control of land by one state after it has conquered Borders define geographic boundaries of political entities or legal jurisdictions such as Governments States or subnational administrative