Siouan language speakers may have originated in the lower Mississippi River region and then migrated to or originated in the Ohio Valley. They were agriculturalists and may have been part of the Mound Builder civilization during the 9th–12th centuries CE. Lakota legend and other sources state they originally lived near the Great Lakes: "The tribes of the Dakota before European contact in the 1600 lived in the region around Lake Superior. In this forest environment, they lived by hunting, fishing, and gathering wild rice. They also grew some corn, but their locale was near the limit of where corn could be grown." This may be conflation with the Algonquian groups typically in that region, though Siouan peoples probably migrated there later. In the late 16th and early 17th centuries, Dakota-Lakota speakers lived in the upper Mississippi Region in what is now Minnesota, Wisconsin, Iowa, and the Dakotas. Conflicts with Anishnaabe and Cree peoples pushed the Lakota west onto the Great Plains in the mid- to late-17th century.