What was true of the one-drop rule? A. It determined a person's status under the black codes.
B. It applied only in railroad transportation.
C. It allowed a single trial of blacks charged with breaking laws.
D. It said that a person's appearance determined his or her status
under the black codes.

the great wall of china worked as a defense for the feudal states of the zhou dynasty to the north. during the warring states period more walls were put up to defend the borders of the different kingdoms. it was semi successful because despite the wall, the mongols eventually conquered china also the great wall provided protection to the economic development and cultural progress, safeguarded the trading routes such as the silk road, and secured transmission of information and transportation. @jayxboof

b, public works good luck

explanation:

queer

the answer is false.