The British East India Company initially tolerated the practice, with William Carey noting 438 incidences within a 30 - mile (48 - km) radius of Calcutta, in 1803, despite its ban within Calcutta itself. Historian A.F. Salahuddin Ahmed states Company employees "not only seemed to accord an official sanction, but also increased its prestige value '', in Bengal, through only prohibiting involuntary immolations in 1813. Between 1815 and 1818, the number of sati in Bengal province doubled from 378 to 839. Under sustained campaigning against sati by Christian missionaries such as William Carey and Brahmin Hindu reformers such as Ram Mohan Roy, the provincial government banned sati in 1829. This was followed up by similar laws by the authorities in the princely states of India in the ensuing decades, with a general ban for the whole of India issued by Queen Victoria in 1861. In Nepal, sati was banned in 1920. The Indian Sati Prevention Act from 1988 further criminalised any type of aiding, abetting, and glorifying of sati.
who abolished sati partha (practice) in india
Queen Victoria