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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1 .securing a just and lasting peace in Europe
2. restricting the freedom of trade to benefit the United States
3. transferring control of European colonies to Britain
4. punishing Germany for starting World War I
During this period of social reform movements during the Gilded Age, <span>
people began movements for reforms like better working conditions or the right to vote for the women.</span>
