Increase since we all need to cooperate
Many countries wanted to control over many economic activities in other countries as well as utilize other countries for cheap labor. In addition, some countries wanted to explore the world and conquer for their homeland while other countries thought that their own country and race was superior to all other countries and therefore believed it was needed that they invade other countries and educate them as well as some countries practicing imperialism to convert people to their religion.
Answer:
The answer is that they thought that it would be a short yet glourious victory.
Explanation:
The emotions among the people when the Civil War started was mixed. People were overwhlemed with the amount of killing, yet didn't want to stop it until they got their way. The Battle of Antietam is the deadliest one day battle in US history. So you can imagine how much that shook up the people back at home. Photography was also very new and for the first time their were pictures available of the battlefield. It was traumatizing, yes, but the main mind set during the Civil War was to kill as many people who didn't approve with you as you could to protect your lifestyle. (Sorry it's so long :P hope you understand now)
True the o.ed was printed after two years of reaserch