D is the answer. I've learned about these things like slavery in my class before.
A justifiable reason to go to war is to go against an evil leader, and let the leaders citizens free. There isn’t thousands of reading to go to war, but if it means letting little boys and girls live the life they deserve in a free country then it would be reasonable a couple lives will be lost.
The United Nations (UN) was created at the end of World War II as an international peacekeeping organization and a forum for resolving conflicts between nations.