Serbia wasn't allied with Belgium
The capital was Belgrade.
Serbia Serbia
Serbia was in WWI because Austria-Hungary declared war on them.
No, Serbia was not part of Russia during World War 1. Serbia was an independent country that was allied with Russia during the war.
In 1914 it had 38 colonies!!:D
Serbia
Serbia
Yes, Russia supported Serbia during World War 1.
Austria-hungary attacked Serbia
World War 1 never had colonies, nor has any other war before or after it. It did however cost the nations who fought in it numerous colonies, most notably Germany, who lost large possessions in Africa and Asia.
Germany was the first country to declare war on Serbia in World War 1. The other countries were pulled into the war because the had alliances with either Serbia or Germany.