Allies ... use wikipedia for more information.
Russia helped Serbia when Serbia had rebelled
Russia declaring war on Germany to protect its ally Serbia.
Absolutely not!
Yes, it is true Russia joined WW1 because of a previous agreements to protect Serbia
serbia
Serbia i think
Serbia
Serbia and austria-Hungary
Throw history they were enemies and allies to. Austria helped Serbia to gain independence from Otoman empire. Austria also helped Serbia to become kingdom in 1882. The era of Serbian - Austrian alliance ended when Serbian King Alexander Obrenovic was assassinated and the new family came to rule. The new Karadjordjevic dynasty was pro Russian and Serbia and Austria became enemies. Them the WW1 started etc.. Today they are friendly oriented but not allies..
Yes. After the years of the death of Tito, it began to collapse and formed into Serbia and Montenegro. By 2006, it had formed into two different countries: Serbia, and Montenegro.
Austria-Hungary declares war on Serbia.
Russia wanted to protect the Slavic peoples of Serbia