<span>the English Revolution</span>
Messages were sent by an electrical telegraph operator or telegrapher using Morse code.
The significant advantage possessed by the Union at the beginning of the Civil War is a larger free population. They also have created big factories that can produce military supplies and ammunition. They have access to railways. This made transportation of men and supplies easier.
Our technology is improved compared to the past that makes transporting goods easily. This will reduce the price of the goods by the difficulty of transport.
The answer for that would be B. new monarchies