The South relied heavily on steamboats for transportation of supplies and troops. They absolutely needed the Mississippi River to be effective in anyway during the war. The North also used it for transporting, but they had railroads. They were mostly concerned with keeping the South from using it.
Popular sovereignty is important to the republic at certain times but at certain times it may not be
As more and more modern things were being implemented into society people found a need for change. A change to modern times. Some modern activites which cause this such as trade and wealth were becoming more popular therefore causing more modern adjustment which caused the Renaissance.
The answer is C. His real name was Temujin, but he took on the title of Genghis Khan later on.