? I barely get any of this and what question or subject is this from?
If the coughing continues and your chest is hurting then you probably have bronchidas
The answer is: [C]: a large supply of cheap labor.
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Note: You meant to write:
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"Which factor HAD the greatest positive effect on the late 19th century American industrialization?"
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That is a quote from George Washington
He believed that a foundation of a good government lies between the unification of people itself.
It's implied in the sentence that the people have more power over the government, not the other way around