The Rio Grande River was established as a boundary between Texas and Mexico.
Explanation:
- The Treaty of Guadalupe Hidalgo is a peace treaty that ended the Mexican-American War (1846-1848). Â Recognizing the Rio Grande River as the border between its territory and Texas, Mexico has undergone the regions of Alta California and Santa Fe de Nuevo Mexico (present-day California, Nevada, Utah and parts of Arizona, New Mexico, Colorado and Wyoming).
- The treaty was signed on 2 February 1848 at the Cathedral of Guadalupe Hidalgo and entered into force on May 30th of the same year.
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