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People moved to California to try to get gold. They would move to California but they would have to pay and they would have to find gold to pay for what they've done. I think the gold rush was good because it helped expand the country.

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Congress declares war on Mexico after American troops, under General Zachary Taylor clashed with Mexican troops on the north bank of the Rio Grande. I think this was good because we gained land

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President James K. Polk signed a declaration of war against Mexico. Polk had submitted his war message to Congress on May 11. I think this was good because we won the war and got a lot of land.

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Texas is admitted as a slave state, making it the 28th state in the Union. I think it was good because we gained more land.

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expansion of the US throughout the American continents was both justified and inevitable. I think that this was a good thing