The Croat-Serb Coalition (Serbo-Croatian: Hrvatsko-srpska koalicija/Хрватско-српска коалиција) was a major political alliance in Austria-Hungary during early 20th century that governed the Croatian lands, the crownlands of Croatia-Slavonia and Dalmatia.
The underlying reason for the formation of the Coalition in the early 1900s was the mass realization that the Hungarian and Austrian governments as well as the Italian irredentists all profit from the divisions between the Croats and the Serbs.
Its declaration promoted equality between Serbs and Croats, constitutional rule and civic rights, local autonomy, and reforms of the Nagodba, the Austro-Hungarian pact which governed Croatia's political status.
[5] Its initial goal was to get rid of the governing National party,[7] seeing German-Austrian domination as a threat, while long-term it sought the unification of South Slavs.
In 1908, the Coalition won the election again, but it also came under attack from the Vienna Imperial Court, which accused its leadership of grand treason.
[9][10] As the international political situation shifted (the Serbian government recognized Austria-Hungary's annexation of Bosnia-Herzegovina), the members were pardoned by Franz Joseph in 1910.