Easy, Antarctica and Australia.
1914
Germany, austria-Hungary, Bulgaria, and the ottoman empire
Russia was not an ally of Germany in World War 1.
In the WW1 Romania was an ally of Western countries.
Australia, New Zealand the US or the French, possibly the Russians
ya they were, they were fighting in world war 2 but not 1
Austria
The US was an ally with France, Britain and Russia. The US was fighting to keep the peace in Europe. The United States supplied its allies with weapon food etc...
Britain, France, Japan and Belgium.
Russia declaring war on Germany to protect its ally Serbia
Russia declaring war on Germany to protect its ally Serbia
All those are correct.