In 1718 the Treaty of Passarowitz opened the Danube river and the Adriatic Sea for international trade with Austrian emperors granting privileges to Ottoman traders including the right for "Greek" merchants to settle in Trieste, Rijeka, Vienna and Zagreb.
[1] Serbs became equal citizens of Zagreb in 1781[2] after Emperor Francis II released an edict named Patent of Toleration.
In addition to this there is also the Monastery of Saint Parascheva of the Balkans There are more prominent Serbs who participated in the social life of the city and among them may be enumerated the following.
[3] Poet Petar Preradović was a prominent participant of the Illyrian movement after whom today one of the city squares is named.
There is also the Central Library of Serbs in Croatia as part of Prosvjeta, Tesla Bank, Metropolitanate of Zagreb, Ljubljana and all Italy which maintains the Choral Society and Museum.