The Treaty of Santefano meant that Serbia became idependent in 1878
In 2006. when Montenegro declared independence.
2000
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
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...
The capital of Serbia is Belgrade, but in Serbia they say Beograd.
The assassination of Archduke Franz Ferdinand.