Complex sentence: Between 1990 and 1994 Sait-Khassan Abumuslimov lectured History at the State University in Grozny and he also took part in the drafting of the Chechen Constitution.
Split into simpler sentences: Between 1990 and 1994 Sait-Khassan Abumuslimov lectured History at the State University in Grozny. He took part in the drafting of the Chechen Constitution.