McElmo Phase refers to a period in the late 11th and early 12th centuries, when drastic changes in ceramics and masonry techniques in Chaco Canyon appeared, archeologists initially suggested that the McElmo influence was brought to Chaco Canyon by immigrants from which site located in Montezuma County, Colorado, it protects some of the best preserved Ancestral Puebloan archaeological sites in the United States?
McElmo Phase McElmo Phase refers to a period in the late 11th and early 12th centuries, when drastic changes in ceramics and masonry techniques in Chaco Canyon appeared. During this period the Ancestral Puebloans living in the canyon started using painted black-on-white pottery versus their standard grey ware, and the masonry and layout of great houses built during the McElmo phase, which was the last major construction era in the canyon, differ significantly from those built during the early parts of the Bonito Phase (850 to 1140), which overlaps with the McElmo Phase. Archeologists initially suggested that the McElmo influence was brought to Chaco Canyon by immigrants from Mesa Verde, but subsequent research suggests that the developments were of local origin. Archeologist R. Gwinn Vivian notes, "The jury is still out on this question, a problem that poses intriguing possibilities for future work."
Pima Villages Pima Villages, sometimes mistakenly called the Pimos Villages in the 19th century, were the Akimel O’odham (Pima) and Pee-Posh (Maricopa) villages in what is now the Gila River Indian Community in Pinal County, Arizona. First, recorded by Spanish explorers in the late 17th century as living on the south side of the Gila River, they were included in the Viceroyalty of New Spain, then in Provincias of Sonora, Ostimuri y Sinaloa or New Navarre to 1823. Then from 1824 to 1830, they were part of the Estado de Occidente of Mexico and from September 1830 they were part of the state of Sonora. These were the Pima villages encountered by American fur trappers, traders, soldiers and travelers along the middle Gila River from 1830's into the later 19th century. The Mexican Cession following the Mexican American War left them part of Mexico. The 1853 Gadsden Purchase made their lands part of the United States, Territory of New Mexico. During the American Civil War they became part of the Territory of Arizona.