Complex sentence: In 1969, the Slovenian Assembly passed the Law on the Pedagogical Service on the basis of which the independent self-managing National Education Institute of the Socialist Republic of Slovenia was transformed into a state administrative body.
Split into simpler sentences: In 1969, the Slovenian Assembly passed the Law on the Pedagogical Service. On its basis the independent self-managing National Education Institute of the Socialist Republic of Slovenia was transformed into a state administrative body.