Building techniques improved, iron became more common, and hydraulics were used to dig riverbeds deeper. So less floods happened that destroyed farms and endangered lives.
<span>I think is mental cometency good lock
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Answer:
The Constitution explicitly assigned the president the power to sign or veto legislation, command the armed forces, ask for the written opinion of his or her Cabinet, convene or adjourn Congress, grant reprieves and pardons, and receive ambassadors.
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The 1842 Slave Revolt in the Cherokee Nation, then located in Indian Territory (Oklahoma) west of the Mississippi River, was the largest escape of a group of slaves to occur among the Cherokee. The slave revolt started on November 15, 1842, when a group of 20 African-American slaves owned by the Cherokee escaped and tried to reach Mexico, where slavery had been abolished in 1836. Along their way south, they were joined by 15 slaves escaping from the Creek in Indian Territory.
The Indians wanted there land back
