A subsidiary alliance, in South Asian history, was a tributary alliance between an Indian state and a European East India Company.
Lithograph of Joseph François Dupleix, who pioneered the system of subsidiary alliances.
A princely state was a nominally sovereign entity of the British Indian Empire that was not directly governed by the British, but rather by an Indian ruler under a form of indirect rule, subject to a subsidiary alliance and the suzerainty or paramountcy of the British crown.
Political subdivisions of the Indian Empire in 1909 with British India (pink) and the princely states (yellow)
Sayajirao Gaekwad III, the maharaja of Baroda State.
An old image of the British Residency in the city of Quilon, Kerala
An 1895 group photograph of the eleven-year-old Krishnaraja Wadiyar IV, ruler of the princely state of Mysore in South India, with his brothers and sisters. In 1799, his grandfather, then aged five, had been granted dominion of Mysore by the British and forced into a subsidiary alliance. The British later directly governed the state between 1831 and 1881.