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.
About Four scores and seven years before Abraham Lincon's speech;
Happened in the U.S know as the bloodiest war ever fought between the United States.
A is the best answer if not it’s c
People typically were keener to listening to white people, so seeing white people support the movement had them more persuaded,