Lincoln recognized that the Emancipation Proclamation would have to be followed by a constitutional amendment in order to guarantee the abolishment of slavery. The 13th amendment was passed at the end of the Civil War before the Southern states had been restored to the Union and should have easily passed the Congress.
Answer:
smallpox weakened the Aztecs' ability to resist
Explanation:
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It was "James Watt" who invented the piston-driven steam engines that powered all kinds of machines in the Industrial Revolution, since this greatly increased production rates and efficiency.
