Complex sentence: Several members of the clan held important political positions such as Mayor and Grand Mufti of Jerusalem and founded and led many Palestinian Arab Islamist groups such as the Holy War Army, the Palestine Arab Party and the Arab Higher Committee.
Split into simpler sentences: Several members of the clan were appointed to important political positions such as Mayor and Grand Mufti of Jerusalem. The clan also founded and led many Palestinian Arab Islamist groups such as the Holy War Army, the Palestine Arab Party and the Arab Higher Committee.