During the 1840s and 1850s, U.S. factories were able to become more productive because
a. waterwheel technology improved.
b. the use of electricity became widespread.
c. steam engines began to be used as an energy source.
d. water and animal power had been phased out.
During the 1840s and 1850s, U.S. factories were able to become more productive because steam engines began to be used as an energy source.
Expert answered|toxictoast96|Points 1798|
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Asked 4/14/2010 8:44:41 PM
Updated 2/4/2018 8:31:02 AM
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Masamune [2/4/2018 8:31:00 AM]
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