Complex sentence: Sunday Mba was a frontline member of NADECO, the pro-democracy group which led the struggle against the dictatorial regime of General Sani Abacha in 1993.
Split into simpler sentences: Sunday Mba was a frontline member of NADECO. He spearheaded efforts of the pro-democracy group which led the struggle against the dictatorial regime of General Sani Abacha in 1993.