Who would benefit from the fourteenth and fifteenth amendment?​

The 14th amendment also contained provisions meant to prevent Confederate leaders from gaining political power or receiving economic benefits from the emancipation of slaves. The 15th amendment was passed to further protect African American enfranchisement.

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