Why does the list cite Mesa Verde in Colorado yet ignores New Mexico's Chaco Canyon, which pre-dates Mesa Verde by 300 years and certainly is much older than Ta

Why does the list cite Mesa Verde in Colorado yet ignores New Mexico's Chaco Canyon, which pre-dates Mesa Verde by 300 years and certainly is much older than Taos Pueblo? There are also Anasazi sites in Arizona as well that aren't quite as old as Chaco but, none-the-less, are older than the mission they list. Further, Utah has thousands of Anasazi sites from granaries to whole villages that date to the 12th and 13th century. Why didn't they make the cut? If the criteria is that the building must be intact, then Mesa Verde shouldn't be there given that it has been heavily restored from how it appeared when first discovered by Wetherill in the late 19th century.