Because they thought Serbia were scum and had disliked them ever since the assassination. :P
Austria declared war on Serbia on July 28, 1914.
Where do u think.....in Austria...WOW....now is it hard to find information yourself?!? :)
July 28th 1914
The US didn't declare war on Russia. The "cold war" refers only to the hostility of each country towards eachother.
Answer: Russia mobilized along the German border. Russia's mobilization amounted to a declaration of war. On August 1, German government declare war on Russia.
AUSTRIAHUNGARY
they were lossers
The assassination of Austrian Archduke Ferdinand was the immediate cause of World War I. He was killed by a Serbian terrorist, which caused Austria to declare war on Serbia. Serbia was allied with Russia, who intervened, causing Germany to declare war on Russia, which caused France to declare war on Germany.
Because Russia Invaded Austria.
Germany declared war with Russia on 1st of August 1914 & in WW2 on the 22nd June 1941.
Yes after Russia declared war on Austro-Hungary. (Germany's ally)
some guy from austria-hungary assassinated archbishop Ferdinand of Serbia. Serbia were allies of Russia and then Russia declared war on austria-hungary
Pan-Slavist (Nationalist) provocation by Russia!
Russia
No. Hitler just launched an invasion without an official declaration of war.