The Mexico civilization DLC will include the Mexican States civilization, and a new scenario unique to the civilization will be added to Historical Battles.
Alongside the new civ, it was announced that those who own the previously released United States civilization DLC will receive The Burning of USS Philadelphia historical battle for free – even if they don’t own the Mexico DLC.
Finally, owners of both the United States and Mexico civilization DLCs will get access to yet another historical battle: The Battle of Queenston Heights.
On December 1, the Mexico civilization will join the game as the “most strategically diverse civilization yet,” according to the AoE3 team.