Nationalism: When you are loyal to your own country or group, and only that one.
Alliance System: Alliances between nations to help both of their defenses against other nations.
Propaganda: Information that is designed to relocate peoples' opinions.
Convoy: A group of armed Navy ships that defend trading ships.
Front: A place where people who are in a war fight.
Socialism: An economical system that the government owns and controls to operate that country's business.
Mobilization: Put together and gather resources for wars.
Dissent: A conflict with or against an opinion or idea.