Serbia was an independent state in 1914 (freed itself from Turkey in the 19th C), and the assassination was carried out in the cause of Bosnia - then under Austrian rule - joining with Serbia. This was a popular cause among Bosnian Serbs, less so among the Croatian and Muslim populations.
World War I intervenes and, as part of Wilson's do-gooding, a new country of Yugoslavia ("South Slavs) was formed around Serbia, which dominated it in the way England dominates the UK. Fast Forward to the 1990s and Yugoslavia messily breaks up, leaving just Serbia and Montenegro calling themselves "Yugoslavia", then "Serbia and Montenegro" then finally just Serbia when Montenegro breaks away.
Serbia lost their independence to Austria-Hungary for only a month while Serbian soldiers were in Albania and Macedonia. After ww1 Yugoslavia mas made, and Serbia gains it's independence at 2006.
Also, if Kosovo is on the list, shouldn´t other, simular ones, be aswell? Looking mostly at South Ossetia, Abkhazia, Somaliland ect.
Peut-être que le Kosovo devrait être dans les pays du tableau de droite car le Kosovo a été indépendant après que la Yougoslavie soit disloquée (2008) donc le Kosovo a été indépendant à une autre période que tous les autres pays de l'ex-Yougoslavie.
Secondly, not everyone takes a test repeatedly to "pose that they know more than they actually do." Some people take the tests repeatedly to (gasp!) *actually learn things and commit them to memory.* Don't project your ego problems onto everyone else.
country's reunification occurred in 1975.
The source can be found here: https://www.thoughtco.com/new-countries-of-the-world-1433444