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After 1845 the fact that Texas was now part of the United States was beyond dispute. Yet annexation did not calm tensions since the Texas-Mexican border remained a subject of dispute. The Mexican government defined the south and west border of Texas at the Nueces River. The Texas government, now backed by the U.S. government, declared that the Rio Grande was its southern border, a claim that increased the size of Texas by almost 200 percent. Predictably, Mexicoresponded to the Texans' belligerent declaration by breaking off diplomatic ties with the United States. This move set in motion a series of events that changed the pattern of Western expansion, foreign relations with Mexico, and American politics.

Provoking a War. Polk, meanwhile, was busy plotting how to gain the rest of the Mexican northwest for the United States. His first move was to send an envoy toMexico City with an offer to purchase California and New Mexico, an acquisition that would mean the loss of half of Mexico's territory, for $30 million. At the same time, he ordered American troops into the disputed territory between the Nueces and Rio Grande, and he dispatched a naval squadron into the Gulf of Mexico.

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13y ago
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13y ago

The Mexican-American War started in 1846 and ended in 1848.


In the contested Nueces Strip near present day Brownsville, Texas.

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9y ago

The Mexican was fought between Mexico and the United States from 1846 to 1848. The war ended with the American capture of Mexico City.

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7y ago

The Mexican American War began in 1846 and ended in 1848.
From 1846 to 1848 and ending with the Treaty of Guadalupe Hidalgo.

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13y ago

The Mexican American war was declared by the US Congress on 13 May 1846 and ended with the Treaty of Guadalupe Hidalgo in 1848.

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The US Congress declared War on 13 May 1846 and it ended with the Treaty of Guadlupe Hidalgo in 1848.

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From 1846 to 1848.

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14y ago

1846-1848

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1846

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Q: When was the mexican american war fought?
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Continue Learning about General History

What war was Mexican American in?

The Mexican War was fought from 1846 to 1848 during Polk's presidency.


Where was the African American war fought?

There is no such conflict as the African American War. You might be thinking of the Mexican-American War.


How did the Mexican-American war fought?

in the present day Mexico


Which Mexican American War battles were fought in Texas?

The Thornton Affair.


What countries fought in the Mexican American War?

Mexico and the United States.

Related questions

What Mexican President fought the US in the Mexican American War?

JFK fought in the Mexican American war


Who did the US fight in the Mexican-American War?

It is called the Mexican American war for a reason. The US fought Mexico.


When was the Mexican-American war fought?

From 1846 to 1848.


What war was Mexican American in?

The Mexican War was fought from 1846 to 1848 during Polk's presidency.


Was the Spanish American War fought between the US and Mexico?

No, that was the Mexican American War.


What war was fought over the ownership of Texas?

The Mexican-American War


Where was the African American war fought?

There is no such conflict as the African American War. You might be thinking of the Mexican-American War.


What era was Mexican-American War in?

The Mexican War was fought from 1846 to 1848 during Polk's presidency.


Which state did the Mexican-American War was fought?

It began in Texas.


Who fought the Mexican American War?

Mexico and the United States.


What country's fought in the mexican-american war?

Mexico, and America


Who fought in Mexican American war?

The turtles and kitties of china.