That would be 4 Japan, where they dropped the two nuclear bombs in Nagasaki and Hiroshima
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Answer:
China receives fewer benefits
Explanation :
China receives fewer benefits because they still enslave people while most countries don't enslave anymore
B). Is the right answer from my opinion.
It caused further tension because of the uncertainty of slavery. The northern states feared that slavery would spread to these new territories, therefore causing tensions to rise between the country.