The assassination of Archduke Franz Ferdinand.
In 2006. when Montenegro declared independence.
2000
some countries supported Austria-Hungary (like Germany...) and some supported Serbia (like Russia...) and then World War I started...
some countries supported Austria-Hungary (like Germany...) and some supported Serbia (like Russia...) and then World War I started...
in VII or VIII century.
The answer to this depends on the time-frame of the question. In 1919, the answer would have been Yugoslavia, but in 2006 the answer would be Serbia (i.e. the region of Serbia became incorporated into the Nation of Serbia).
Serbia become de facto independent from Ottoman empire in 1804. and 1807. And de jure in 1830.
Yes
In 1878 Montenegro, Romania, Serbia were recognized as totally independent countries; Greece was independent from 1827.
Russia helped Serbia when Serbia had rebelled
To "fall out with" someone is to have a disagreement and become distant from one another. It's as though you have fallen out of the friendship.
All people living in Bosnia and Herzegovina were not in favor of independence.