Complex sentence: In 1989, the Federation of Jewish Communities (MAZSIHISZ) was founded; originally a non-fractional body, it became de facto Neolog after the small Orthodox minority seceded in 1994.
Split into simpler sentences: In 1989, the Federation of Jewish Communities (MAZSIHISZ) was founded as a non-fractional body. It became de facto Neolog after the small Orthodox minority seceded in 1994.