From unrecorded history to first recorded history, the Lakota Sioux camped in the winter in the Black Hills, following the bison migration from Canada to Mexico, and did not come across a United States governmental spokesperson until the Lewis and Clark Expedition in 1804 near the Missouri River. The two men refrained from entering the Black Hills because they lacked governmental jurisdiction and feared the deadly consequences of entering sacred land. Moreover, the Teton Sioux first embraced Lewis and Clark with gifts and food and in return, Lewis and Clark notified the Indians that the United States controlled much of the Sioux lands under the newly obtained Louisiana Territory by distributing medals to symbolize peace and American citizenship.