Non European forces proving themselves Vs European military might

[Gonzalo G]

That is correct, Manolo, but the conquest of the New Spain was not only circunscribed to Tenochtitlan and the meshica (the wrongly so-called "aztecs", by everbody including the actual mexicans), but ir was a long process which took much more time and battles, in the same mesure the spaniards and their indian allies (mainly tlaxcalan), advanced in all direction to colonize. The north was never completely conquered, as the coahuiteca, apache, kiowa, comanche, yaqui y otras yerbas were never subjugated by them. And the fireweapons were more useful in this process. But the spanish colonization was characterized always by the cross-breed of blood and culture with the indians since the beginning, and that was another political measure which gave them many adepts among the native population, and a very solid basis of military and political power.
Un abrazo

Gonzalo