The North's control of railroads gave it an advantage during the Civil War because

The North's control of railroads during the Civil War gave it many advantages because they could supply their military faster, move more men efficiently, and enlist those who worked in railroads into the military.

Explanation: The railroads were definitely a serious advantage to the North. Not only was the North way too advanced in technology and industrialization than the South, the North's economy, dependent of industrialization, brilliantly crushed the South with railroads. So much efficiency was brought with the installation of railroads by the North,

assuming that you are talking about the one in egypt: hecka oil

explanation:

they made rome the dominant power in the mediterranean.