When did Kosovo appear? All I've heard is foreign exchange students from Serbia, but not Kosovo.
Probably around when the Ottomans/Turkish people controlled the Balkans. Then Serbia declared independence from the Ottoman Empire, which had Kosovo. Then it turned into Yugoslavia, with Kosovo an autonomous province. Then the Kosovo people rebelled again the Serbians around the 1990 during the Yugoslav wars. It became a U.N. protectorate I think.. Declared independence from Serbia in 2008. Several countries doesn't recognize it though.
If your saying the country... 2008.