We share a more-or-less unified culture with Canada. Do you feel the US invading them isn't a quest to take control of foreigners?
I'm asking these questions because its genuinely a foreign concept to me that these things are not imperialistic quests of conquest. I understand people have different point of views and so I'm trying to understand what the justification is.
Due to rate limiting, I'll edit:
> If communications technology broke down and the United States fractured into 5 different states, would you be surprised if most military efforts went into taking over other regions of the former US rather than Canada or Mexico?
That isn't the same as the warring states since that was the first proper unification of China as an empire. Up until that point in history, it wasn't unified in the sense the US is. I also would consider attempting to recover those regions an act of imperial aggression.
> If they were eventually reunified after hundreds of years of fighting each other while having displayed no urge to invade Mexico, and subsequently spent several more centuries not invading Mexico while denigrating militarism and soldiers generally, why would you start worrying for Mexico?
China invaded Korea (China's Mexico). So I'm not sure where you are going with that given that is a historical falsehood when it comes to analogies.
Similarly, when you are refusing to acknowledge the territorial claims of your neighbors like China is in the South China Sea to the point you are taking military actions