Upon opposite sides of the largest of a cluster of lakes which illuminate the oval valley of Mexico have stood, since the beginning of the fourteenth century, three cities, Tezcuco, Mexico, and Tlacopan, capitals of three confederate nations, the Acolhuas, the Aztecs, and the Tepanecs.
To the first belonged the eastern portion of the valley, to the second the southern and western, and to the third a small portion of the north-west. Of this confederation, Tezcuco was for a time the most powerful; Tlacopan was least. While keeping to their respective limits within the valley, beyond its classic precincts the three powers made common cause against the barbarians.
About the middle of the fifteenth century, under the warlike Montezuma I., Mexico attained the supremacy, and during the next sixty years extended her empire to the shores of either ocean. Within this circuit, however, were several nations which she never conquered; instance the Tlascaltecs, the Tarascos, and the Chiapanecs. Many there were—for example, the people of Tehuantepec, of northern Guatemala, and Soconusco, and the Miztecs and Zapotecs of Oajaca, whose conquest by the Aztecs was temporary—who either paid tribute for a time only, or who threw off the yoke the moment the invader’s back was turned. The Matlaltzincas, west of the lakes, and the Huastecs and Totonacs of Vera Cruz, were subjugated but a few years prior to the appearing of the Spaniards. These coast-dwellers had not yet become reconciled to the rule of the interior lords, but hated them as inveterate foes; and herein lay one of the chief causes of success accompanying the Castilian arms. Indeed, Aztec supremacy was maintained in every quarter only by constant war; rebellion, as soon as checked in one quarter, breaking out in another. Further than this, the Aztecs, by their overbearing spirit, had become obnoxious to their allies; yet their aggressive policy was