Reconstruction lasted from 1863 to 1877, reconstruction abolished slavery and the communist. Reconstruction made the newly freed slaves have rights.
The correct answer for this question is this one: "D Britain and the Cunard line were humiliated when Germans had captured the trophy for the fastest transatlantic crossing." That is not a motivation for the Cunard line to build the lusitania.
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According to the statement above: "Identify the portion of information that was missing during Darwin's time that fully explained variation and allowed Darwin's theory of evolution to become accepted."
The answer is: an understanding of genetics.
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