During the two centuries following the discovery of the New World, over 90% of the native population were killed by disease and warfare.
Answer:
In 1820, amid growing sectional tensions over the issue of slavery, the U.S. Congress passed a law that admitted Missouri to the Union as a slave state and Maine as a free state, while banning slavery from the remaining Louisiana Purchase lands located north of the 36º 30' parallel. The Missouri Compromise was a United States federal legislation that stopped northern attempts to forever prohibit slavery's expansion by admitting Missouri as a slave state and Maine as a free state .
Explanation:
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An artificial waterway<span> or </span>artificially<span> improved river used for travel, shipping, or irrigation.</span>
