Complex sentence: The JUI became more politically active under Maulana Mufti Mahmood (1919-1980) who assumed its leadership in 1962 and led the JUI against Ayub Khan's modernization policies.
Split into simpler sentences: The JUI became more politically active under Maulana Mufti Mahmood (1919-1980) who assumed its leadership in 1962. Mahmood led the JUI against Ayub Khan's modernization policies.