antohan
gets aroused by tagline boobs
Soviet union disbanded which caused a massive instability in the nations you mentioned and the entire Eastern Europe. Even more so as Yugoslavia were in a war and of course a war affects the near neighbors stability to a great extent as well.
The Golden era from Eastern Europe was during the time they belonged to the Communist side of the cold war. Most nations are still a work in progress but they have reached a point where they can provide brilliant talent in sports again.
I don't think the war affected neighbours TBH. I don't think political/economic instability is necessarily that big an issue either.
Having thought through it, maybe it's the way football was organised under Communist rule. There was always one team designated as the Party/Army's team and the best players were scouted and pretty much forced to join these teams, where they invariably got better coaching, partners, built a strong understanding, largely played together for the NT in international tournos as well...
Crucially, their development wasn't impacted by transfers, which is probably what has the most devastating effect. Many talented youngsters get signed up to reserve sides across Europe and, homesickness and turmoil aside, are just regarded as one of many bets on potential stars that may or may not work. It's usully a case of sink or swim. In those Communist regimes they wouldn't discard talent like that but actually focused on nurturing it, it was all part of national pride and state propaganda if you could bulld strong sides with star players. All those great players left their countries when they were already well established and developed players, not something that often happens these days.