One of the most significant challenges is building an airplane had to do with "propulsion", since the technology that allowed motors to have enough energy to lift an airplane into the sky with a passenger wasn't available for most of history.
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More and more land was required for the collection of natural resources, resulting in the continuing theft of land from Native Americans. More and more labor was required to work the land, resulting in a tremendous growth in slavery in the middle and southern colonies.
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Explanation:
Santa Anna ordered General José de Urrea to lead 550 troops to Goliad. Although several of Santa Anna's officers argued that the entire army should advance along the coast, where supplies could be gained via sea, Santa Anna instead focused on Béxar, the political center of Texas and the site of Cos's defeat.