land. The Americans soon outnumbered the Mexicans and some were calling for annexation by the USA. This perhaps is the starting point of hostilities between the Mexicans and the Americans, which would later develop into the Mexican American War. The Texas situation however would evolve into a revolution led, without the help of the American army. The Mexicans were defeated and Texas declared independent in 1836 due to the question of slavery Texas was not annexed until 1844.
             The question of slavery comes up in context to westward expansion as it causes disruption within the uni
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