Answer:
America's support the ongoing struggle by Cubans and Filipinos against Spanish rule, and the mysterious explosion of the battleship U.S.S. Maine in Havana Harbor.
Explanation:
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Cotton gin- Eli Whitney
iron plow- Jethro Wood
steel plow- Oliver
reaping machine- Cyrus McCormick
clothing factory- Francis Lowell
sewing machine- Elias Howe
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