The Indians would have ruled this dominion. in 1914 the only party in town was the Indian National Congress. The Muslim League had next to no members and the radicalisation of Moslems hadn’t begun
Rule by Congress probably would have CAUSED radicalization. Just as the establishment of the Jewish homeland in Palestine in the Palestinian Mandate caused Arab resistance to Jewish immigration. The Muslims would have immediately started to demand inclusion in the government, and if the Hindi majority has resisted, as they probably would, then no telling what might have happened. The differences may superficially seem to be like that French-Anglo divide in Canada. But I think that it would eventually have followed the route taken in the Palestinian movement where religious fanaticism begins to grow and grow and to make compromises almost impossible. The British would have been caught in the Middle.