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Each is accompanied by a caption describing the geological forces at work . And there have been plenty of examples of sovereign governments having foreign forces on their soil . " For another , this expression , as it applies to water flow through porous media , is a catchall term meant to be used for things that we usually cannot measure directly , such as the chemical , electrostatic , and molecular forces between a water-based solution and solids that give rise to capillary forces . The men in these armies spend their muscular force in drilling , their mental force in thoughts of warfare . However , Hegel 's own account of the relationship between freedom and citizenship has been more or less completely submerged by the ascendancy of nationalist ideas over the past few hundred years , and the notion of citizenship has come to depend for its moral force on a prior notion of national identity .