The Principality of Albania was a monarchy from 1914 to 1925. It was headed by Wilhelm, Prince of Albania, and located in modern Albania in the Balkan region of Europe. The Ottoman Empire owned the land until the First Balkan War (1912—1913), which ended in the Treaty of London that formed the principality. The Principality of Albania survived invasions during World War I (1914–1918) and subsequent disputes over Albanian independence during the Paris Peace Conference (1919–1920). In 1925, the monarchy was abolished and the Albanian Republic (1925–1928), a parliamentary republic and dictatorship, was declared.