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Documenting the Discoveries

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Treaty of Guadalupe Hidalgo,...
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Treaty of Guadalupe Hidalgo, printed treaty with handwritten notations, March 10, 1848

After considerable debate, the U.S. Senate approved for ratification the Treaty of Guadalupe Hidalgo on March 10, 1848, by a vote of 38–14. This annotated Senate copy indicates controversial points in Article V, which designated an 1847 map by J. Disturnell as the basis for the U.S.-Mexico boundary. The Senate rejected a clause limiting changes to that boundary.

Records of the U.S. Senate, National Archives and Records Administration

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