Complex sentence: Malhar Rao got very angry on the death of his only son and wanted to take revenge and vowed that he would cut off the head of Maharaja Suraj Mal and throw the soil of fort into Yamuna after destroying it.
Split into simpler sentences: Malhar Rao got very angry on the death of his only son and wanted to take revenge. He vowed that he would cut off the head of Maharaja Suraj Mal and throw the soil of fort into Yamuna after destroying it.