In Bulgaria, it was Tsar Boris III who declared a royal dictatorship in the 1930s. Boris III assumed power in 1918 after the end of World War I and the abdication of his father, Ferdinand I. In 1934, he dissolved the National Assembly, suspended the constitution, and established a personal dictatorship. This period is known as the "Boris III's Royal Dictatorship" or the "Tsarist Dictatorship." Boris III ruled as an autocrat, with limited political freedoms and strict control over the government and society. His regime lasted until his death in 1943 during World War II.