[2] The colonial author Inca Garcilaso in the first chapter of his eighth book treats with all luxury of details the town of the Huacrachucos, name to which he attributes a Quechua etymology with proper motivation.

[4] Regarding the name of the district, the historian José Vara Llanos in his work "Historia de Huánuco" (1959:53) mentions: "formed of guacra or guagra: horn, and chuku: hat... was the distinctive garment used by the primitive inhabitants of that area that constituted the nation of the Wacrachucus.

The land of Huacrachuco was the melting pot of old civilizations that also flourished in other areas of the upper and middle basin of the Marañón River, particularly the Wanukos, Wacrachucos and Chachapuyas nations, which bordered them to the South, North and Northeast, respectively.

Therefore, having gained some strong steps Tupac Yupanqui sent emissaries to request peace and friendship, Incas informed that they would not take away any land or possessions from Wacrachucos, but rather they would enrich them with new irrigation ditches and other benefits; and, although there were many who seemed to recognize the Inca as lord, not all agreed, because the young people, being less experienced and more numerous, contradicted the curacas and seniors, went out with their fervor and pursued war with much fury, it seemed to them that they were obliged to win or die all, because they had contradicted the elders.

The Inca Tupac Yupanqui did not want to go ahead in his "conquest of the known world", because it seemed to him that he had had enough in that summer in having conquered a province like that one, so rough to siege and so bellicose of people; and also because that land is very rainy, he ordered to lodge his army in the border of the region.

He commanded to provide Wacrachuco with a lot of food, because with the war they had wasted what they had for their year, so they were very happy the newly conquered and lost the fear of punishment for their rebellion.

He commanded the newly acquired province to be given trace and order, to develop irrigation channels, and to make terraces, leveling hills and slopes that could be sown, all of which was recognized by Wacrachuco indians in great benefit to them.

With the construction of the "penetration road" from Chimbote to Uchiza, the town of Huacrachuco has become a major centre of interregional trade due to its numerous annexes and nearby settlements.