A group of nations and/or people that worked together to attack an enemy nation.

A policy or practice by which a country increases its power by gaining control over other areas of the world

A sense of national consciousness exalting one nation above all others and placing primary emphasis on promotion of its culture and interests as opposed to those of other nations

Ideas, facts, or allegations spread deliberately to further one's cause or to damage an opposing cause

A zone of conflict between armies

Organization of a nation's armed forces for active military service in time of war or other national emergency

An agreement to stop fighting a war

Statement made in 1918 by US President Wilson saying the Great War was being fought for noble reasons and for post-war peace.

A form of land warfare using occupied fighting lines consisting largely of trenches

Military submarines operated by Germany during WWI.

The peace treaty that ended the war between Germany and the Allied Powers.

An alliance consisting of Austria-Hungary, Italy, Turkey and Germany

An alliance consisting of England, France, and Russia

A secret message sent by Germany to Mexico in 1917 that proposed an alliance against the United States but was intercepted by Great Britain

A general association of nations created after WWI that would work together to keep peace and prevent future global conflicts.