Complex sentence: However, Emperor Haile Selassie responded quickly and sent military forces against Abba Jofir, who him brought back to Addis Ababa, where Abba Jofir was imprisoned.
Split into simpler sentences: However, Emperor Haile Selassie responded quickly and sent military forces against Abba Jofir. The soldiers brought Abba Jofir back to Addis Ababa, where he was imprisoned.