The Preamble of the Government of India Act 1919 provided complete popular control as far as possible in local government area.
Increase in powers of the Governor General who was at the apex of the administration, which strengthened his position as an autocrat.
The division of subjects into Central and Provincial (Federalism) and the further division at the provincial level between Reserved and Transferred subjects was a novel feature of the Mont-Ford Reforms. Introduction of diarchy at the provinces.
Dyarchy means double government at the provinces. The 'Reserved' subjects in charge of Councillors, 'nominated' by the Governor and transferred subjects in charge of Councillors - Ministers 'appointed' by him.
Creation of Parliamentary atmosphere in the legislature and gave people an opportunity to have a look in administration .