If he's smart he takes a long look at the technologically advanced people he has vanquished. He would show his wisest advisors the winged canoes that are propelled by the winds, the black powder that activates the fire sticks, those surviving four-legged beasts upon those backs they rode. He would recruit the surviving conquistadores (but kill Cortez and that traitorous puta who assisted him) Then maybe do away with human sacrifices. (It is no coincidence that Mexico is the home of all those monarch butterflies!) Could Montezuma have brought this off?