Main stream writing on the topic is motivated to focus on the GEO in geopolitics, because talking about geographic features and demographic pyramids is cleaner

Main stream writing on the topic is motivated to focus on the GEO in geopolitics, because talking about geographic features and demographic pyramids is cleaner than wading into politics, especially when intermingled regional foreign politics. But the POLITCS does a lot of heavy lifting, whereby politics influence things like tech innovation/adoption that can tame geography, i.e. restitive frontier regions being incorporated by rail infra, mass public works or inventions like AC/desalination make improving previously inhospital/unpassable geography. Or in defense, gunpowder/mechanization mitigated overwhelming advantage of static geo based defense, and similarly going forward, long range precision strikes (conventional ICBMs / advanced rocketry) will reduce all global favourable geo conditions to extreme vunerability. How will US preeminence fare if she has no impenetrable homeland to operate from etc.