How 565 princely states became part of the Indian Union — persuasion, diplomacy, and, in a few cases, force.
At independence in 1947, British India comprised not only the directly administered provinces but also 562–565 princely states, covering roughly two-fifths of the subcontinent's area and a quarter of its population, ruled by hereditary princes under British paramountcy. With the lapse of paramountcy on 15 August 1947, each state was technically free to accede to India, accede to Pakistan, or remain independent — a situation that threatened to fragment the newly independent country. Their integration is one of the great administrative achievements of the early Indian state, led principally by Sardar Vallabhbhai Patel as States Minister, with V.P. Menon as Secretary of the States Ministry.
Patel and Menon's strategy was to persuade rulers to sign a simple Instrument of Accession, ceding only three subjects to the Indian Union — defence, external affairs and communications — while leaving internal autonomy largely intact in the short run. Most rulers, recognising the reality of geography and the absence of a viable alternative, signed before or shortly after independence. Rulers who acceded early were later encouraged to sign a further Instrument of Merger, surrendering full administrative control to the Indian government in return for privy purses and personal privileges (abolished later by the 26th Amendment, 1971).
States were integrated using different models depending on size and circumstance:
Prelims frequently tests which minister/officer led integration, the sequence of Junagadh–Hyderabad–Kashmir, and the instrument names (Accession vs Merger). Mains rewards connecting this episode to the broader theme of nation-building and federalism — how the integration set the template later followed for the States Reorganisation of 1956.
