List of United States treaties

This is a list of treaties to which the United States has been a party or which have had direct relevance to U.S. history.

Before the United States Declaration of Independence in 1776, the sovereign of the United Kingdom and the leaders of various North American colonies negotiated treaties that affected the territory of what would later become the United States.

These are treaties which the United States has made with other sovereign international states. This is mostly to distinguish them from the next category. Under the treaty clause of the United States Constitution, treaties come into effect upon final ratification by the President of the United States, provided that a two-thirds majority of the United States Senate concurs.

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From 1778 to 1871 the United States government entered into more than 500 treaties with the Native American tribes; some of these treaties have since been violated in some way or outright "broken" by the US government. And some of these treaties were violated and broken by the Native American tribes before the ink even had a chance to dry. However, violations by one party do not nullify the treaties; the treaties are still in effect, and Native Americans and First Nations peoples are still fighting for their treaty rights in federal courts and at the United Nations.

Treaty-making between various Native American governments and the United States officially concluded on March 3, 1871 with the passing of the United States Code Title 25, Chapter 3, Subchapter 1, Section 71 (25 U.S.C. § 71). Pre-existing treaties were grandfathered, and further agreements were made under domestic law.

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