 Pauketat questions established knowledge about ancient North America.For instance, due to improvements in radiometric dating and new methodologies, such as identification of domestic remains, he and other researchers have concluded that Cahokia rose and fell over a much shorter time period, around three hundred years, than had been previously attributed.The ubiquity of Cahokian-derived goods across much of then contemporaneous Midwest and Mid-South U.S. has also been examined.