Up to the end of World War I, archival activities in Slovenia were closely related to the development of the Hapsburg monarchy. In the 18th century a division between the historical and administrative archives was made. In practice and in theory, the arrangement of records by contents was popular, and only gradually did the principle of preserving the original arrangement of records prevail. The latter principle was adhered by Anton Aškerc, Ljubljana's Archivist, who began working in the archives in 1898. After World War I, when the majority of Slovene territory was incorporated into Yugoslavia, there were only three public archives in Slovenia: the Provincial Archives in Ljubljana (renamed the State Archives in 1926, but still connected to the National Museum), the Municipal Archives of Ljubljana, and, after 1933, the Provincial Archives in Maribor, in 1945, the State Archives in Ljubljana, connected to the National Museum, became the Archives of the Republic of Slovenia. In 1955/1956, a network of regional archives started to establish itself in Slovenia. Due to the historical differences in Yugoslavia, the archival practice and archival science developed separately in each republic. Slovene archivists started to publish their own professional publications (after 1959) and reviews (after 1978). The development of archival science to be introduced as a subject in the history department of the Faculty of Arts in Ljubljana in 1978/79.