Expansionist anticipations rest on claims about geography, geopolitics, and geohistory but are error-filled, slanted, and misleading. Geography errors arise from confusing physical with practical geography. Earth-space analogies frequently suggest misleading similarities while hiding actual dissimilarities. Ascentionism, the deep-seated human tendency to view elevations as improvements, makes space expansions seem desirable. Geopolitics analyzes the relations between politics, particularly violence and security, and geography and technology. Geopolitics maps proclivities, not inevitabilities, and indicates which political arrangements are necessary, feasible, and likely. The main ideas of geopolitics are summarized and boiled down to twelve propositions. The main geopolitical factor, violence interdependence, measures capacities of actors to inflict damage upon one another. When violence interdependence is intense, actors can readily destroy one another, and security requires ending anarchy and establishing governments, which vary from republican to hierarchical. Geopolitics also offers propositions about special places, consolidation tendencies, and frontiers. Earth geohistory, across Archipelago, Global, and Planetary Earths, supports geopolitical claims.