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The treaty was negotiated for the US by Albert Gallatin, ambassador to France, and Richard Rush, minister to the UK; and for the UK by Frederick John Robinson, Treasurer of the Royal Navy and member of the privy council, and Henry Goulburn, an undersecretary of state.

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When the Thirteen Colonies became apart of the united states it was after they defeated Great Britain. With the help of the Declaration of independence.

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The Oregon Treaty is a treaty between the United Kingdom and the United States that was signed on June 15, 1846, in Washington, D.C. The treaty brought an end to the Oregon boundary dispute by settling competing American and British claims to the Oregon Country.

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Florida became a part of the united states when France ceded east Florida to the United States and renounced all claim on western Florida. Basically Florida became a burden to Spain and they couldn't afford it anymore.

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In 1848, the signing of the Treaty of Guadalupe Hidalgo ended the Mexican-American War and allowed the New Mexico territory to be annexed to the United States.

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The Gadsden Purchase, or Treaty, was an agreement between the United States and Mexico, finalized in 1854, in which the United States agreed to pay Mexico $10 million for a 29,670 square mile portion of Mexico that later became part of Arizona and New Mexico.

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Texas was annexed by the United States in 1845 and became the 28th state. Until 1836, Texas had been part of Mexico, but in that year a group of settlers from the United States who lived in Mexican Texas declared independence.

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The Treaty of Paris is what brought the United states of 1783 into the new United States. The Treaty of Paris ended the Revolutionary war, and brought the United states of 1783 with it.

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With the Pinckney treaty in place and the weak Spanish empire in control of Louisiana, American statesmen felt comfortable that the United States' westward expansion would not be restricted in the future. This situation was threatened by Napoleon Bonaparte's plans to revive the French empire in the New World.