Complex sentence: He rose to power after the death of his uncle Salem Al-Sabah; the 9th Ruler of Kuwait in 1921 and was the lead Cavalry Commander and founder of the Military of Kuwait and the Kuwait Public Security Force.
Split into simpler sentences: He rose to power after the death of his uncle Salem Al-Sabah, the ninth Ruler of Kuwait, in 1921. Ahmad was the lead Cavalry Commander and founder of the Military of Kuwait and the Kuwait Public Security Force.