"In warfare, it's harder for taller people to fit into cockpits or thru hatches"moron, tall people/longlegged people dun get selected as pilots
your kneecaps get smashed if u ever got to eject
"taller" provinces tend to be less populated or less densely populated than the "shorter" ones.
another piece of shxt from you
u cannot take china as an eg becos people move towards provinces where pple can find jobs
and richer provinces , overtime, tend to produce taller people due to better nutrition