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Answer:
The Thirteenth Amendment to the United States Constitution abolished slavery and involuntary servitude, except as punishment for a crime. It was passed by the Senate on April 8, 1864, by the House on January 31, 1865, and adopted by the States on December 6, 1865.
Explanation:
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<span>Spain's conquest of central Mexico and the Andes made Spain the wealthiest and most powerful nation because of the abundance of gold and silver which it gained. This large amount of gold and silver it was able to obtain was sent to its national treasuries allowing it to become a threat to any other European competition.</span>
Answer: The placebo effect
Explanation: The placebo effect is defined as a phenomenon in which some people experience a benefit after the administration of an inactive substance or sham treatment. What exactly is a placebo? A placebo is a substance with no known medical effects, such as sterile water, saline solution, or a sugar pill.