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Treaty Signing

When: 1825
Where: unknown
Part of: U.S. Senate ratifies Hunkpapa treaty

The Hunkpapa and the United States signed a treaty in 1825, committing to maintain existing friendships. Chiefs signed with an x-mark, recognizing U.S. supremacy.

The treaty marked the first mention of the Hunkpapa in European-American historical records. The agreement committed the Hunkpapa and the United States to keep up the 'friendship which has heretofore existed.' Chiefs signed the document with an x-mark, thereby acknowledging the supremacy of the United States.

Sources

Hunkpapa Wikipedia, revision of 2026-09-13

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.