Why did the mexican army set out for texas

they were mad, that had been their territory and they wanted it back

Mexico obtained its independence from Spain on a 11-year battle (1810-1821). In turn, Texas which originally was a territory part of Nueva España (as was Mexico called) during the colony era under Spain, had english speaking settlers arriving at the territory at the time. General Santa Anna, president of the newly indpendent Mexico, deemed that the situation represented a threat, and marched with a large army towards San Antonio de Bexar. A fierce  battle was held, and the mexican army took the Alamo site.

i think the answer is a and i hope this ; ))

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