Hungary!! its not Russia
Firstly its Austria And Hungary and no they didnt, Germany declared war on russia.
Romania was between Austro-Hungary and Russia.
They went to war with Russia since Russia wanted to help Serbia since they were allies.
The Date of Independence for Hungary was in the April of 1849
Answer this question… Russia had an alliance with Serbia, and Germany had an alliance with Austria-Hungary.
Yes. Russia entered a regional conflict between Austria-Hungary and Serbia to protect its fellow Slavic nation.
Russia.
Hungary
some guy from austria-hungary assassinated archbishop Ferdinand of Serbia. Serbia were allies of Russia and then Russia declared war on austria-hungary
Austria-Hungary declaired war on Serbia so Russia declaired war on Austria-Hungary; so Germany declaired war on Russia; so France declaired war on Germany; and on and on …
It was a revolt against the iron rule imposed by Russia on Hungary, since the second World War.