No land with very polarized ideologies has stayed as a unified land/entity for too long (in the history of humanity)..
Major powers constantly produce disinformation campaigns to weaken each other in that regard (divide & conquer). Relatively simple minded critters that form the majority of a population don't have much choice in the matter, except fall for it..requires more intuition and iq to look through it.
Some cultures are more resilient, some are not.
Vote for throughtful and maybe even compassionate centrists/moderates willing to listen to more points of view.