Complex sentence: NBU was established on 18 September 1991 by Bogdan Bogdanov and a group of Bulgarian intellectuals with a resolution by Bulgarian Parliament, the main goal was creating an institution which to modernise Bulgarian higher education yet preserve its traditions.
Split into simpler sentences: NBU was established on 18 September 1991 by Bogdan Bogdanov and a group of Bulgarian intellectuals with a resolution by Bulgarian Parliament. The main goal was creating an institution to modernise Bulgarian higher education yet preserve its traditions.