I'm no historian, but people that win wars and conquer lands, write history. I mean even the history of the finding of the Americas. Most people seldom discuss the wiping out of most Native American tribes but remember the pilgrims as honest people trying to escape persecution. I think the same can be said for 100's or 1000's of years before that.
Sorry, we don't allow throughout history questions. These tend to produce threads which are collections of trivia, not the in-depth discussions about a particular topic we're looking for. If you have a specific question about a historical event or period or person, please feel free to re-compose your question and submit it again. Alternatively, you may PM /u/caffarelli to have your question considered for an upcoming Tuesday Trivia thread.