What would of happened if Cortes had created his own kingdom in Mexico, maybe not wrecking so much of the Aztec Empire but using it and putting his men in charge and maybe slowly stripping off the Aztec gold to keep himself in Aztec favour, also since there may be fewer Europeans the Indians (or at least the Aztecs) developed immunities later on to European diseases.
And ideas if this could have happened?
And ideas if this could have happened?