belligerent
Civil war is when one part of a nation fights another part of the same nation. World war is when several nations are fighting several other nations simultaneously.
Home Front
Switzerland.
It is a warship
Poland
neutral
Republic of Ireland.
Franklin Roosevelt wasn't part of world war 1. he became part of world war 2 when japan attacked the nation. he then signed a declaration of war against japan.
they were part of the Empire.
Neutralism is a foreign policy position wherein a state remains neutral in future wars. A nation that does not participate in a war is called a neutral state.
Britain's involvement in the war led to the involvement of Canada, because it's a Commonwealth Nation.
The nation of Poland did not actually exist during World War I. It was part of the Austria-Hungarian Empire of which Germany was a part.