Best known of the plains peoples, the Sioux migrated from the American north east in the 18th century. The Sioux played a dominant role in the history of the plains. One outstanding event was when they combined forces with the Cheyenne and Arapaho and obliterated the U. S. cavalry forces under Gen. George Custer at the Little Big Horn in 1876. If the tribes and nations had been able to muster consistent unity throughout the West, the history of the United States would have been very different.
In historical times, the Crow lived in the Yellowstone River valley, which extends from present-day Wyoming into North Dakota. Pressure from neighboring groups had forced the tribe to migrate farther west over time, and eventually this pressure led to the Crow becoming bitter enemies of both the Sioux and the Cheyenne peoples.
The Crow hunted bison and other game, using the hides for tipis and clothing. Headdresses were made of eagle and other feathers, and many articles of clothing and accessories were covered with intricate beadwork.