Answer:
Eu engulo minha própria porra! isso é estranho
It was a easy way to give everyone a place in society. I was organized and easy to maintain for the European governemnt, but it wasn't a fair system because peasants and serf were unable to work upwards in the society.
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Extreme pro-slavery elements objected to it because it provided a precedent by which Congress had power to regulate slavery. Abolitionists opposed it because it allowed slavery to continue to spread in some of the areas.