Maps are powerful tools that can be used for political and military domination and control by representing spaces. They facilitate the advancement of military operations by showing lines of supply, topography, and possible retreats. Geopolitical theorists like Mackinder believed that control over Eurasia was key due to its resources and strategic position. Maps have been used throughout history to influence geopolitics and shape boundaries, as seen through Nazi Germany's use of maps to justify territorial claims. More recently, polar maps have been used to assess strategic advantages during the Cold War by changing perspectives on global distances.