It didn't leave it stronger but built it to become better than what it was, it started to build amendments for all people but it started the industrial revolution in u.s
Answer: The domestic slave trade, also known as the Second Middle Passage and the interregional slave trade, was the term for the domestic trade of slaves within the United States that reallocated slaves across states during the antebellum period.
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The scientific method was discovered in 1561-1626 by Sir Francis Bacon. A scientific method is when the experimenter creates a hypothesis to test it out and make sure it is correct for its project.