What happened on August 16, 1946 Direct Action Day?

According to the 1941 census 53.4 per cent of the Bengalis were Muslims and the rest Hindus, with a minuscule proportion of Buddhists and Christians thrown in. The province was divided into five administrative divisions, which were further subdivided into districts, as follows : Presidency division, consisting of the districts of 24-Parganas, Nadia, Murshidabad, Jessore and Khulna and the Presidency town of Calcutta ; Burdwan division, with the districts of Howrah, Hooghly, Midnapore, Bankura, Burdwan and Birbhum ; Rajshahi division, with the districts of Rajshahi, Pabna, Malda, Dinajpur, Bogra, Rangpur, Jalpaiguri and Darjeeling ; Dacca division, with the districts of Dacca, Faridpur, Barisal and Mymensingh (the largest district in British India) ; and Chittagong division with the districts of Chittagong, Chittagong Hill Tracts, Noakhali and Tipperah. Apart from these districts of Bengal, the people of Sylhet district of Assam, adjoining the Tipperah and Mymensingh districts of Bengal, those of the princely state of Cooch Behar adjoining Jalpaiguri and Rangpur, and a large number among the people of the princely state of Tripura, and among those of the districts of Manbhum nad Singhbhum in Bihar also largely spoke Bangla, and therefore were Bengalis. A map of the erstwhile province of Bengal, as it existed till the midnight of 14th August 1947 is at Fig. 1. The Bangla-speaking areas outside Bengal are also shown in the same map. <More> http://teabreak.pk/what-happened-on-august-16-1946-direct-action-day-289/31223/