In the Venacular it might be something like: Its not over till the Fat Lady Sings. The Mexican-American War followed in which the US trounced Mexico and took from it vast lands like California, New Mexico and Arizona. It was an act of Empireunlike anything else in American History.
Mexico severed diplomatic ties with the U.S. as it had already warned that any annexation attempt would mean war.
You should note however, that Polk already planned for all of this: he took advantage of the ill-defined border between Mexico and Texas as pretext to start the Mexican-American War (1846-1848) with the aim of taking California and its riches away from Mexico.
It prompted a break in diplomatic relations with the United States, as Mexico had warned the US any annexation attempt would result in war. Both Mexico and the United States increased their military presence on the Mexico-Texas border, which at the time was ill-defined. Shots between both armies on this no-man's-land resulted on American deaths, eventually prompting president Jackson to declare war against Mexico.
In general terms, it is a still-existing wound for many Mexicans even today.
It led to war with the United States.
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The US annexed Texas from Mexico in 1844 after James K Polk won the presidential election.
No Mexico was never part of the Union, Texas which gained independence from Mexico was a slave state and got annexed in the US together with a free state to create equality in congress.
we shouldn't have gone to war with Mexico because all we really wanted was California at the time and Texas came to us to be annexed. It basically was a big misunderstanding between who was on who's land.
The US annexed hawaii.
Texas
The significance of Texas being annexed to the US led to war with Mexico.
Mexico refused to recognize the annexation.
because of the border problem after they got annexed
It was Mexico's territory, to begin with. See related questions.
Mexico Texas had been an independent country for nine years when it was annexed by the United States.
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Mexico diplomatically notified the US that the annexation of Texas would be considered an Act of War, and the US went ahead and annexed Texas.
Texas qualifies as such.
The independence from Mexico of the Republic of Texas was declared on March 2, 1836. It was annexed into the US and became a state in 1845.
Mexico Texas had been an independent country for nine years when it was annexed by the United States.
The US annexed Texas from Mexico in 1844 after James K Polk won the presidential election.