When the Habsburg Empire annexed these provinces after the 1815 Congress of Vienna, the new authorities implemented a bureaucratic administration, established the Kingdom of Dalmatia, which had its own Sabor (Diet) or Parliament which is the oldest Croatian political institution based in the city of Zadar, and political parties such as the Autonomist Party and the People's Party. They introduced a series of modifications intended to slowly centralise the bureaucratic, tax, religious, educational, and trade structure. These steps largely failed, despite the intention of wanting to stimulate the economy. Once the personal, political and economic damage of the Napoleonic Wars had been overcome, new movements began to form in the region, calling for a political reorganisation of the Adriatic along national lines.