Answer:The Columbian Exchange refers to the exchange of diseases, ideas, food, crops, and populations between the New World and the Old World following the voyage to the Americas by Christo pher Columbus in 1492. The impact was most severe in the Caribbean.
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All 4 are correct answers
He believed in civil rights laws but couldn't do much about them due to the congress. He did manage to get Thurgood Marshall to federal court and later during Johnson he became a Supreme Court justice. He supported Meredith's integration which is why he signed in an executive order to forbid segregation in schools. He also signed an executive order that forced government contractors to take affirmative action and help african-americans.
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This columns shows that partitioned ethnic groups have suffered significantly longer and more devastating civil wars. It also uncovers substantial spillovers as ethnic conflict spreads from the historical homeland of groups partitioned to nearby areas where non-split ethnicities reside