Complex sentence: In 1827 there arose a great scandal in the Salt Revenue department centred on a dishonest Dewan, and assured of Dwarkanath's own personal integrity and character, he was requested to take over as Dewan of the Board.
Split into simpler sentences: In 1827 there arose a great scandal in the Salt Revenue department, centred on a dishonest Dewan. Because of Dwarkanath's own personal integrity and character, he was requested to take over as Dewan of the Board.