Final answer:
Stands-with-a-Fist became part of the Sioux through adoption after a battle. The history of the Lakota Sioux and other Native American tribes features conflict with the U.S. government over treaties and land, exemplified by the Battle of Little Bighorn and its evolving historical interpretation.
Step-by-step explanation:
Stands-with-a-Fist ended up with the Sioux because she was adopted by the Sioux after a battle. This character's background, although a fictional element from the movie "Dances with Wolves," reflects the complex interactions and sometimes-adoption practices between Native American tribes and settlers during the era of westward expansion and conflict.
The history between the Sioux and the U.S. government is a narrative marked by conflict, particularly in the 1870s, that arose from broken treaties, land disputes, and struggles over resources such as the gold discovered in the Black Hills. This fraught relationship reached a peak with the Battle of Little Bighorn in 1876, where the combined forces of Lakotas, Cheyennes, and Arapahos defeated Colonel George Custer's cavalry.
The memory of Custer's "last stand" has evolved over time, from a tale of military defeat to a symbol of the broader tragedy of Native American dispossession. The experiences of other tribes during this period, like the Nez Perce and the Apache, also highlight a range of responses to U.S. expansion, from armed resistance to forced migration.