— Also termed duarchy; dyarchy.
“Dyarchy. A term applied by Mommsen to the Roman principate … a period in which he held that sovereignty was shared between the princes and the senate. The term has also been given to a system of government, promoted as a constitutional reform in India by Montagu and Chelmsford and introduced by the Government of India Act, 1919. It marked the introduction of democracy into the executive of the British administration of India by dividing the provincial executives into authoritarian and popularly responsible sections composed respectively of councillors appointed by the Crown and ministers appointed by the governor and responsible to the provincial legislative councils …. The system ended when full provincial autonomy was granted in 1935.” David M. Walker, The Oxford Companion to Law 386 (1980).
