Yugoslavia was a country in Europe until it's breakup in 1992. The country consisted of the current European countries of Slovenia, Croatia, Bosnia and Herzegovina, Serbia, Kosovo, Montenegro and Macedonia.
The Zastava M85 rifle was built in Yugoslavia. (SG1: "The Tomb") Colonel Robert Makepeace served in the country before he joined Stargate Command. (RPG: "First Steps: The Stargate Unexplored Worlds Roleplaying Sourcebook")