All of the above!
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New power sources were found within the steam engine as well as from natural resources found in the American West.
Labor Unions were created for the purpose of helping the common man. This gave better working conditions and in turn, more efficient work places.
Transportation improvements like the car and railroad gave people the opportunity to travel and explore new places to develop industrial factories within these new areas.
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Answer:
new power sources
labor unions
transportation improvements
Explanation:
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