Complex sentence: However, those who suffered most severely were non-Muslims like the Jews, Greeks, Armenians, and Levantines, who controlled a large portion of the economy, though it was the Armenians who were most heavily taxed.
Split into simpler sentences: However, those who suffered most severely were non-Muslims like the Jews, Greeks, Armenians, and Levantines, who controlled a large portion of the economy. Though it was the Armenians who were most heavily taxed.