Complex sentence: Under Colonel Houari Boumediène (1965--1979) state and army leadership was joined under his dominant and highly authoritarian presidency, but after his death, factionalization and rivalries within the military and political élites has been a major factor in Algerian politics.
Split into simpler sentences: Under Colonel Houari Boumediène (1965--1979) state and army leadership was joined under his highly authoritarian presidency. After his death, factionalization and rivalries within the military and political élites has been a major factor in Algerian politics.