It would be "<span>Slavery was an established institution until the Twelfth Amendment was ratified on December 18, 1865" that is not true, since it was in fact the 13th amendment that ended slavery. </span>
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jk ur answer is D
It means that everyone is equal, we all have the freedom of life liberty and pursuit of happiness, and that to make sure we have these and our rights are not impeded upon, we have created and managed our government, and our government gets its power from the citizens of the USA