How and why were African Americans denied the rights they had been granted with the passage of the Reconstruction Amendments?

(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

whats the question? im not quite understanding your question.

i would say that the politicial parties from state to state varies.