When was serbia discoverd?

If you are American, you have to understand that some countries were founded, not discovered like your continent. It wasn't so easy to just move in. If you're not, ignore what I said.
The Serbian Empire was established in 1346 by Tsar Stefan Dušan

The Neolithic Starčevo and Vinča cultures existed in or near Belgrade and dominated the Balkans (as well as parts of Central Europe andAsia Minor) 8,500 years ago.[9][10] Some scholars believe that the prehistoric Vinča signs represent one of the earliest known forms ofwriting systems (dating to 6,000 - 4,000 BC)