
Yugoslavia: A New beginning
Prva Liga Yugoslavija
The top tier contains 18 teams. It starts off with 2 CL spots, though neither are group stage, and up to 3 EL places. The bottom two teams are automatically relegated. No more than 6 foreign players are allowed in a match squad, while the prize money ranges from 4.8M for winning to 1.25M for finishing last. The teams that start at this level are here.
Druga Liga Yugoslavija
The second tier contains 36 teams, split into two divisions - Istok (East) and Zapad (West). The teams in the Istok division are from the former republics of Serbia, FYR Macedonia, and Montenegro, while the Zapad teams are from Croatia, Bosnia & Herzegovina, and Slovenia. The top team from each is promoted while the bottom three are relegated. No more than 4 foreigners are allowed in a match squad here.
Republic Leagues
The third tier consists of leagues corresponding to each Socialist Republic. Each division starts with between 18 and 22 teams, though they're allowed to drop down to 16 in an attempt to maintain regional integrity. The top team is promoted and no teams are relegated. Here are the teams that start in each division: Bosnia, Croatia, FYR Macedonia, Montenegro, Serbia, and Slovenia.
Kup Marshal Tito (the real name -- no political statements here)
The cup features all of the teams in the structure as well as 45 unplayable teams that are in a sort of amateur league. There's a total of 214 teams that enter. In the three qualifying rounds, the 160 amateur league/republic league teams play. 20 teams come out of those to join the 36 Druga Liga clubs in the First Round, and the 18 Prva Liga teams join in the 1/16th finals, which are the Third Round. The winner gets 2.5M pounds and other teams get paid various amounts as they get knocked out.
There's also a reserve league and a U19 league.