It's just not realistic to treat countries, organizations, or other large groups of people the same as if they are individuals, any more than it makes sense to treat a computer program like a transistor.
Of course, in the USA at least, there is a pervasive culture of pretending the past doesn't matter, but this is childish. Two books I can recommend if you want to expand your ability to think this way are Why Nations Fail and Prisoners Of Geography.
[1] But since common sense isn't so common: a democracy can vote to become authoritarian, but an authoritarian place can only usually become democratic by force. Also, a democracy, to survive, needs an economy that is dominated by a relatively large, not relatively small number of interests, so they will check and balance each other and no single interest can capture the whole system. But once you become authoritarian it is easy for the economy to decline, simplify and become less diverse (and thus even better fit for authoritarians). It becomes an attractor. Have you not noticed that authoritarian states have a tendency to suppress development/innovation sometimes when it seems "irrational" to pass up economic gains? This is to avoid creating more powerful elites that would compete with the existing elites. Once you own a huge enough part of the pie, it becomes more important to keep yourself on top than to make the pie bigger.