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Explanation:
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The prevailing economic theory of the late eighteenth century was "mercantilism", since this was a time of great territorial expansion that led to goods being trading lucratively all over the world.
The use of women, children and immigrant allowed industrialists and factory owners to keep wages low for native born men. This was an important catalyst for the organization of labor unions, Children often worked long hours for low pay. The same was true of women and immigrants.
B. To develop an industrial economy in the South.