It's not about judging other cultures, it's about the power of the sword, which every civilization has used to achieve it's ends. The conquered peoples of history simply lost. Any civilization that could use it did, and those that couldn't would have if they could have.

The radical self-hatred doctrine so devoutly worshipped by so many today states that the Europeans were evil for conquering the Americas, but all other conquest through the ages is simply a non biased fact from the pages of history , neither right nor wrong, no one is "the bad guy"