Meanwhile the Aztecs at Chapultepec, growing arrogant, provoked their neighbors, and were repressed by those who were more powerful. But they abided their time. They were good fighters, and the Colhua ruler courted them to assist him in his maraudings, and thus they were becoming accustomed to warfare and to conquest, and were giving favors to be repaid. This intercourse, whether of association or rivalry, of the Colhuas and Mexicans (Aztecs), was continued through succeeding periods, with a confusion of dates and events which it is hard to make clear. There was mutual distrust and confidence alternately, and it all ended in the Aztecs settling on an island in the lake, where later they founded Tenochtitlan, or Mexico.[839] Here they developed those bloody rites of sacrifice which had already disgusted their allies and neighbors. [Illustration: THE LAKE OF MEXICO. A map which did service in different forms in various books about Mexico and its aboriginal localities in the early part of the eighteenth century. It is here taken from the _Voyages de Francois Coreal_ (Amsterdam, 1722).] Meanwhile the powers at Colhuacan and Azcapuzalco flourished and repressed uprisings, and out of all the strife Tezozomoc came into prominence with his Tepanecs, and amid it all the Aztecs, siding here and there, gained territory. With all this occurring in different parts of his dominions, the Chichimec potentate grew stronger and stronger, and while by his countenance the old Toltec influences more and more predominated. And so it was a flourishing government, with little to mar its prospects but the ambition of Tezozomoc, the Tepanec chieftain, and the rising power of the Aztecs, who had now become divided into Mexicans and Tlatelulcas. The famous ruler of the Chichimecs, Techotl, died in A.D. 1357, and the young Ixtlilxochitl took his power with all its emblems. The people of Tenochtitlan, or their rulers, were adepts in practising those arts of diplomacy by which an ambitious nation places itself beside its superiors to secure a sort of reflected consequence. Thus they pursued matrimonial alliances and other acts of prudence. Both Tenochtitlan and its neighbor Tlatelulco grew apace, while skilled artisans and commercial industries helped to raise them in importance.