How did the war affect the need of railroad

It depends on the war.

Explanation:

Based on the question, I'm going to assume you're asking about the Civil War.  Railroads were needed during the civil war to transport soldier, equipment, and supplies to both the North and the South.

the correct answer is the supreme court.this is because when a person was accused of a crime during rome they brought him to a place to decide his fate also known as a jury

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