Henry is described as a "war devil" in the Red Badge of Courage because he loads and shoots and reloads and shoots and shoots until his rifle is so hot. He runs towards the enemy without any regard for his life, so that’s why he is described as a madman, a “war-devil”.
The answer would be the second option. The price of gasoline had gone done prior to this shift.
The Cotton Gin impacted the industrial revolution by speeding up the process of picking cotton seeds
The militia when in actual service in time of war or public danger.