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 were mustering in great strength, and that the Spaniards must be hard pressed In their new quarters. They sent messengers to Tezcuco, expressing their apprehension, and offering reinforcements, which the general, when he set out on his march, had declined. He returned many thanks for the proffered aid; but, while he declined it for himself, as unnecessary, he indicated in what manner their services might be effectual for the defence of Chalco and the other places which had invoked his protection. But his Indian allies were in deadly feud with these places, whose inhabitants had too often fought under the Aztec banner not to have been engaged in repeated wars with the people beyond the mountains.

Cortés set himself earnestly to reconcile these differences. He told the hostile parties that they should be willing to forget their mutual wrongs, since they had entered into new relations. They were now vassals of the same sovereign, engaged in a common enterprise against a formidable foe who had so long trodden them in the dust. Singly they could do little, but united they might protect each other's weakness, and hold their enemy at bay till the Spaniards could come to their assistance. These arguments finally prevailed; and the politic general had the satisfaction to see the high-spirited and hostile tribes forego their long-cherished rivalry, and, resigning the pleasures of revenge, so dear to the barbarian, embrace one another as friends and champions in a common cause. To this wise policy the Spanish commander owed quite as much of his subsequent successes as to his arms.1

Thus the foundations of the Mexican empire were hourly loosening, as the great vassals around the capital, on whom it most relied, fell off one after another from their allegiance. The Aztecs, properly so called, formed but a small part of the population of the valley. This was principally composed of cognate tribes, members of the same great family of the Nahuatlacs, who had come upon the plateau at nearly the same time. They were mutual rivals, and were reduced one after another by the more warlike Mexicans, who held them in subjection, often by open force, always by fear. Fear was the great principle of cohesion which bound together the discordant members of the monarchy, and this was now fast dissolving before the influence of a power more mighty than that of the Aztec. This, it is true, was not the first time that the conquered races had attempted to recover their independence; but all such attempts had failed for