The movie relied on veiled racism, to the approval of the largely black audience, as the term "colonizer" set the mood early into the movie and the 'diverse' cast carried the arrogant clumsy path from there. It mercifully froze midway through, and I eased away from the group I was watching it with.
Namor, the king of Atlantis, is revealed as the relocated Mayan civilization's leader under the sea. Don't worry, there is plenty of 'real' history to be found in the movie. They found a way to use all of the worst elements of the conquistadors tale. They stay faithfully to the smallpox as a weapon narrative, while glossing over the reality that if smallpox was used a a weapon, wouldn't North American viruses affect the 'colonizers' as well? Don't focus on reality in a comic book movie(unless you are cherry picking negative themes to foment hate).