> when the "world" for all practical purposes included only European powers The United States, Canada, Japan, New Zealand, and Australia all entered the war.

> when the "world" for all practical purposes included only European powers The United States, Canada, Japan, New Zealand, and Australia all entered the war. There were significant theaters of the war in Africa and the Middle East. China was initially neutral in WWI but did eventually declare support for the Entente and sent 140,000 laborers to Europe. [1] Brazil entered the war after losing ships to German U boats. [2] Over a million Indian troops participated. [3] Thailand, New Guinea, and Samoa were involved [4] And I’m just scratching the surface. The very worst fighting was concentrated in the industrial meat grinders of the front lines in Europe but there was significant participation from all corners of the earth. It earned the name “World War.” 1. https://en.m.wikipedia.org/wiki/China_during_World_War_I https://en.m.wikipedia.org/wiki/China_during_World_War_I 2. https://en.m.wikipedia.org/wiki/Brazil_during_World_War_I https://en.m.wikipedia.org/wiki/Brazil_during_World_War_I 3. https://en.m.wikipedia.org/wiki/Indian_Army_during_World_War_I https://en.m.wikipedia.org/wiki/Indian_Army_during_World_War... 4. https://en.m.wikipedia.org/wiki/Asian_and_Pacific_theatre_of_World_War_I https://en.m.wikipedia.org/wiki/Asian_and_Pacific_theatre_of...