What was the Jim Crow system? A) a system of economic struggle before World War I B) a system of racial casting in the North after the Civil War C) a system of racial casting in the South after the Civil War Eliminate D) a system of African American slavery in America before the Civil War

C) a system of racial casting in the South after the Civil War

Explanation:

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

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

hope this .

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