The People's Party in Croatia was originally formed in 1841, during the period of Croatian romantic nationalism. The Croatian People's Party describes the events of the Illyrian movement since 1835 as its history.. After 1861 the People's Party was known as the People's Liberal Party, its main splinter party was the Independent People's Party (1880–1903) which became more pro-autonomist, while the "old" People's Party developed into "party of the Settlement" having collaborated with the pro-Hungarian Unionist Party (known as the People's Constitutional Party). The Progressive Party (1904–1906) and the Croatian People's Progressive Party (1906–1910) were also liberal parties in the Kingdom of Croatia-Slavonia as an autonomous part of the Austro-Hungarian Empire.