Finland was not participating WW 1. Finland was part of Russia (Grand Dutchy of Finland) enjoying wide autonomy during first years of WW 1. Finland was declared independent in 1917. Finland was not spared from turmoil though. There was a civil war in spring 1918 in which 35 000-45 000 finns were killed. (Population was about 3 million in year 1918.)
Russia was not an ally of Germany in World War 1.
In the WW1 Romania was an ally of Western countries.
Easy, Antarctica and Australia.
Finland
ya they were, they were fighting in world war 2 but not 1
Austria
1914
RUSSIA
Britain, France, Japan and Belgium.
Finland
Russia declaring war on Germany to protect its ally Serbia
Russia declaring war on Germany to protect its ally Serbia