I doubt it, nimh. Kansas is one of our more conservative states. In fact, flat regions (unless dessert) are conducive to farming, and farmers tend to be conservative.
yeh ... phaps it doesnt work in the US. (tho the rockies arent exactly a liberal walhalla). but it works within, er, germany, france, austria, slovakia, serbia ... err ... romania (kinda) ...
or: flattest countries in europe are denmark and holland; most mountainous ones include austria, slovakia ... bosnia, kosovo, chechnya! so there you go ...
(actually, i know its too easy to falsify to state without a wink - but i do actually still think theres a point in there.
even farming, in the open horizon of a flat country that would tend to facilitate easier transport, trade and population moves and would be more likelly to yield good crops and thus more easily attainable economic growth - would generally encourage a different mindset, i'd presuppose, from farming on the hard-to-cultivate steep slopes or narrow valleys of mountain areas where trade and transport are more haphazard and village communities more isolated from each other, and thus less likely to get acquainted let alone habitual with strange voices and foreign products.
but perhaps i should add a wet vs dry criterium to finetune the theory ;-).