What is a claim I can make about slavery in the United States

By the time of the American Revolution (1775–1783), the status of enslaved people had been institutionalized as a racial caste associated with African ancestry.[1] During and immediately following the Revolution, abolitionist laws were passed in most Northern states and a movement developed to abolish slavery. The role of slavery under the U.S. Constitution (1789) was the most contentious issue during its drafting. Although the creators of the Constitution never used the word "slavery", the final document, through the three-fifths clause, gave slave-owners disproportionate political power.[2] All Northern states had abolished slavery in some way by 1805; sometimes, abolition was a gradual process, and hundreds of people were still enslaved in the Northern states as late as the 1840 Census. Some slave owners—primarily in the Upper South—freed their slaves, and philanthropists and charitable groups bought and freed other slaves

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Explanation:

answer; i believe the answer is (mesopotamia); modern day