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The Treaty of Guadalupe Hidalgo,
The Civil war is a single war no war ended it. The signing of the peace treaty at Appomatox Court House ended the US Civil War.
Mexico City.
For the US the war ended with the signing of the "Paris Peace Accord" in 1973. For South Vietnam, the war ended in 1975, when it fell to North Vietnam.
The US by taking Mexico City.
Mexico
Mexico City
The Mexican Cession, which was purchased for $15 million. However the US wanted another small strip of land beneath the area which is now southern New Mexico and Arizona. This is called the Gadsden Purchase and was purchased for $10 million.
The Treaty of Guadalupe Hidalgo (and Mexico definitely got the short end of it).
The cause of the war was the failure of Mexico to negotiate the sale of California and New Mexico and various border conflictsw with Texas. Mexico and the US were the participants. The US won the war and the Treaty of Guadalupe Hidalgo ended it.
It was fought from 1846 to 1848 and began with the Thornton Affair on 25 April, 1846. Congress declared war on Mexico on 13 May 1846, and ended on 2 February with the signing of the Treaty of Guadalupe Hidalgo.It began in 1846 with the Thornton Affair.
The US received Alta California and Nuevo Mexico.