Answer:
Democrats favored expansion in order to increase their power in Congress and expand slavery; Whigs opposed expansion because they feared losing power in Congress.
Explanation:
The main reason was that so they get to have the land.
Answer:
James Watt- steam engine with condenser- used much less coal than earlier engines.
Henry Bessemer- Industrial process for steel production- made it cost efficient to produce steel from molten iron on a large scale.
Eli Whitney- Cotton gin- Allowed fibre to be extracted from seed more efficiently.
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