Informed of the natural advantages possessed by the inhabitants of this delightful region, the Inca Yupanqui resolved to attempt the annexation of Chili to his extensive empire. He accordingly marched with a powerful army to the frontiers of the country: But, either from apprehensions of his personal safety, or to be in a favourable situation for reinforcing the invading army and directing its operations, he established himself with a splendid court in the province of Atacama, the most southerly district of Peru, and confided the command of the invading army to Sinchiruca, a prince of the blood royal of Peru. Preceded, according to the specious custom of the Peruvians, by several ambassadors, and attended by a considerable military force, this general reduced under the Peruvian government, more by persuasion than force, the four most northerly tribes of the Chilese, named Copaipins, Coquimbans, Quillotans, and Mapochians. After this, not being able by his ambassadors to persuade the Promaucians into submission, who inhabit the delightful country between the river Rapel on the north and Maule on the south, he passed the river Rapel with his army to reduce them by force of arms. The name of the Promaucians, which signifies _free-dancers_[56], had been given them on account of their fondness for every kind of amusement, and their peculiar attachment to dancing; yet the love of pleasure had not rendered them effeminate. With the assistance of their allies, they drew together a formidable army and fought the Peruvians with such heroic valour as to defeat them in a battle, which, according to Garcilasso, was continued during three successive days. [Footnote 56: On a former occasion their name is explained as signifying _the people of delight_, owing to the beauty, fertility, and charming climate of their country.--E.]