📄 Revision sheet · YugMap
Post-independence consolidation and reorganisation
1948 – present
Key events
| 1948 · Delhi | Assassination of Mahatma Gandhi |
| 1948 · Hyderabad | Hyderabad integrated (Operation Polo) |
| 1949 · New Delhi | Constitution of India adopted |
| 1950 · New Delhi | Constitution comes into force |
| 1951 · New Delhi | India's first general election (1951–52) |
| 1953 · Kurnool | Andhra State formed |
| 1954 · Puducherry | French settlements transferred to India |
| 1954 | Panchsheel agreement with China |
| 1956 | States Reorganisation Act |
| 1959 · Tawang | The Dalai Lama takes refuge in India |
| 1960 · Mumbai | Bombay State split into Maharashtra and Gujarat |
| 1961 · Goa | Goa liberated |
| 1962 · Tawang | Sino-Indian War |
| 1964 · New Delhi | Death of Jawaharlal Nehru |
| 1966 | Tashkent Declaration |
| 1967 · Naxalbari | Naxalbari uprising |
| 1969 · Bengaluru | ISRO founded |
| 1969 | Nationalisation of 14 major banks |
| 1972 · Shimla | Simla Agreement |
| 1974 · Pokhran | Smiling Buddha nuclear test |
| 1975 · Gangtok | Sikkim becomes a state of India |
| 1975 · New Delhi | The Emergency declared in India |
| 1977 · New Delhi | Emergency lifted; Janata Party wins |
| 1984 · New Delhi | Assassination of Indira Gandhi |
| 1984 · Bhopal | Bhopal gas tragedy |
| 1984 · Amritsar | Operation Blue Star |
| 1984 | Rakesh Sharma flies to space |
| 1991 | Economic liberalisation |
| 1991 · Sriperumbudur | Assassination of Rajiv Gandhi |
| 1992 | Panchayati Raj amendments (73rd and 74th) |
| 1998 · Pokhran | Pokhran-II nuclear tests |
| 1999 · Kargil | Kargil War |
| 2000 | Chhattisgarh, Uttarakhand and Jharkhand created |
| 2001 · New Delhi | Attack on the Indian Parliament |
| 2005 | Right to Information Act |
| 2007 · New Delhi | Afghanistan joins SAARC |
| 2014 · Bengaluru | Mangalyaan reaches Mars orbit |
| 2014 · Hyderabad | Telangana becomes India's 29th state |
| 2016 | Demonetisation of 500 and 1000 rupee notes |
| 2017 | Goods and Services Tax introduced |
How the states were formed
| When did Gujarat become a state | 1960 — Becomes a state. |
| When did Nagaland become a state | 1963 — Becomes a state. |
| When did Haryana become a state | 1966 — Becomes a state. |
| When did Himachal Pradesh become a state | 1971 — Becomes the 18th state on 25 January 1971. |
| When did Manipur become a state | 1972 — Becomes a state. |
| When did Tripura become a state | 1972 — Becomes a state. |
| When did Sikkim become a state | 1975 — Becomes the 22nd state of India. |
| When did Goa become a state | 1987 — Becomes a state on 30 May 1987. |
| When did Mizoram become a state | 1987 — Becomes a state. |
| When did Arunachal Pradesh become a state | 1987 — Becomes a state. |
| When did Jharkhand become a state | 2000 — Becomes a new state. |
| When did Chhattisgarh become a state | 2000 — Becomes a new state. |
| When did Uttarakhand become a state | 2000 — Becomes the 27th state on 9 November 2000. |
| When did Telangana become a state | 2014 — Becomes a new state on 2 June 2014. |
Key terms
- Instrument of Accession
- The document by which a princely state's ruler agreed to become part of the Union of India. (NCERT Class 12, Politics in India since Independence, Ch. 1)
- Linguistic states
- States drawn to reflect the boundaries of languages, following the States Reorganisation Commission — the basis of the States Reorganisation Act of 1956. (NCERT Class 12, Politics in India since Independence, Ch. 1)
- Union, State and Concurrent lists
- The three lists dividing subjects between the Centre and the states in the Constitution; more items were placed under the Union than in other federations. (NCERT Class 12, Framing the Constitution)
Next steps
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Years are from YugMap’s records; dates marked c. are approximate. Printed from yugmap.com.