The Tariff of 1828 led to the because vice president John C. Calhoun suggested that southern states nullify the federal law.​

franklin d. roosevelt

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d is the answer. leo should include the source.

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity