Answer:
The U.S wanted Mexico's land (AKA California and Arizona and etc..)
Explanation:
Science allowed us to analyze what had been working, and further allowed the establishment of new technology
Basically, they were reorganized soldiers, removing any traces of loyalty from the crown, and being trained, more so than before, to be able to "get out" in just a minute. The Continental Army was founded by Congress with the command of George Washington.
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The correct answer is second one