Answer: Westward expansion, the 19th-century movement of settlers into the American West, began with the Louisiana Purchase and was fueled by the Gold Rush, the Oregon Trail and a belief in "manifest destiny."
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The answer is _____.
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No options to choose from.
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Machines needed to be repaired less frequently. Products could be manufactured on an assembly line.
Since they control lots of island groups which makes thing hard to border up and defend on all sides... Unlike in Germany which they had 2 fronts and it was easier to have bunkers to defend certain location...
It symbolizes War. Ur welcome. B