The best and most correct answer among the choices provided by your question is the second choice or letter B "The Kansas-Nebraska Act."
The Kansas-Nebraska Act<span> was passed by the U.S. Congress on May 30, 1854. It allowed people in the territories of </span>Kansas<span> and </span>Nebraska<span> to decide for themselves whether or not to allow slavery within their borders. The </span>Act<span> served to repeal the Missouri Compromise of 1820 which prohibited slavery north of latitude 36°30´.</span>
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Answer:
Explanation:
Lincoln is said to have summed up the importance of keeping the border states ... Virginia, where they had been put to work on behalf of the Confederacy, and ... of the United States, the few actual attempts at colonization during the Civil War failed. ... In principle, Lincoln approved of emancipation as a war measure.
Because they were forcibly removed by their employers because many of the men who comprised most of the military returned to their former jobs in the labor force.
