The concept of nullification is a "legal theory that a state has the right to nullify, or invalidate, any federal law which that state has deemed unconstitutional with respect to the United States Constitution (as opposed to the state's own constitution)."
Answer:
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Explanation:
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The first one is The Great Migration, sometimes known as the Great Northward Migration or the Black Migration, was the movement of 6 million African Americans out of the rural Southern United States to the urban Northeast, Midwest and West that occurred between 1916 and 1970.the second one Economic exploitation, social terror and political disenfranchisement were the push factors. The political push factors being Jim Crow, and in particular, disenfranchisement. Black people lost the ability to vote.the three one is Economic exploitation, social terror and political disenfranchisement were the push factors. The political push factors being Jim Crow, and in particular, disenfranchisement. Black people lost the ability to vote.