Complex sentence: He continued his work, while on the run, during the occupation from several cities and towns in Egypt and Syria and became one of Muhammad Ali's confidants until his death from tuberculosis at the age of eighty-eight.
Split into simpler sentences: He continued his work, while on the run, during the occupation from several cities and towns in Egypt and Syria and became one of Muhammad Ali's confidants until his death. He died from tuberculosis at the age of eighty-eight.