[6] It extends from modern-day Utah down to southern Chihuahua, and from the coast on the Gulf of California eastward to the Río Bravo river valley.
]), combined with a climate that was much milder than eastern Aridoamerica, allowed the development of agricultural techniques that were imported from Mesoamerica.
At the same time, in Paquimé, a site connected to the Mogollon culture, there are ceremonial structures related to Mesoamerican religion and an important number of skeletons of Macaws that were carefully transported from the forests of southeastern Mexico.
[13] The area encompassed by Oasisamerica fostered the growth of several major cultural groups: the Ancestral Pueblo people, Hohokam, Mogollon, Pataya, and Fremont.
[16] The territory was covered by juniper forests which the ancient peoples learned to exploit for their own needs, since foraging among the other vegetation only sufficed for half of the year, only to fail from November to April.
[17] Archaeological investigation has established a sequence of cultural development that began before the first century BC and extended to AD 1540 when the Pueblo Indians were subjugated by the Spanish Crown.
Due to these factors, the Hohokam were forced to construct irrigation systems with elaborate webs of reservoirs and canals for the Salt and Gila rivers that could reach several meters in depth and 10 km in length.
[citation needed] The principal settlements of the Hohokam culture were Snaketown, Casa Grande, Red Mountain, and Pueblo de los Muertos, all of which are to be found in modern-day Arizona.
Several other artifacts are unique to the Hohokam, including conch necklaces (imported from the coastal regions of Greater California and Sonora) etched with acids produced by pitaya fermentation; and axes, trowels, and other stone instruments.
Some hold that the culture developed endogenously (without outside influence), pointing to Snaketown which had its origins in the fourth century BC.
Along the same line of reasoning, several other technological advances like the canal works and certain cultural phenomena like cremation seem to have originated in western Mesoamerica.
Proof of this can be found in the recovery of copper hawk bells,[19] pyrite mirrors,[20] and the construction of ball courts.
[citation needed] By the time the Europeans arrived in the Arizona and Sonora Deserts, a region which they named Pimería Alta, the urban centers of the Hohokam had already become abandoned presumably due to the health and ecological disasters that befell the indigenous social system.
[citation needed] The Mogollon was a cultural area of Mesoamerica that extended from the foothills of the Sierra Madre Occidental, northward to Arizona and New Mexico in the southwestern United States.
Either way, the peoples who inhabited the area in question adapted well to a landscape that was marked by the presence of pine forests and steep mountains and ravines.
Because the Mogollon burial sites displayed such wealth, they were often looted by grave robbers who sought to sell their spoils on the archaeological black market.
[citation needed] Perhaps the most impressive Mogollon ceramic tradition was to be found in the valley of the Mimbres River in New Mexico.
[citation needed] As another contrast with the Hohokam and Ancestral Pueblo, there is no widely accepted chronology for the development of the Mogollon culture.
Technological changes were produced very gradually, and the form of social relationships and organizational patterns remained almost static for 1500 years.
During this period, the Mogollon likely benefited from trade relations with Mesoamerica, a fact that facilitated the development of agriculture and the stratification of society.
It is also possible that Ancestral Pueblo influence could have grown at this time, because the Mogollon began to construct buildings of masonry, just like their northern neighbors.
It dominated a mountainous region that contains many archaeological sites known as casas alcantilado, outposts constructed in hard-to-reach caves on the eastern slopes of the Sierra Madre.
Possible descendants of the Mogollon include the Tarahumara (Rarámuri) based in Chihuahua, the Hopi in Arizona, and the Zuni in New Mexico.
Theoretically, the Fremont communities would have emigrated toward the north, bringing with them the customs, social organization structures, and technology of the Ancestral Pueblo.