1st Amendment - 1951 - Added 9th Schedule to protect land reform laws; imposed reasonable restrictions on Freedom of Speech.
7th Amendment - 1956 - Reorganization of States on linguistic basis; creation of Union Territories.
10th Amendment - 1961 - Inclusion of Goa, Daman & Diu as Union Territories.
12th Amendment - 1962 - Inclusion of Puducherry (Pondicherry) into India.
13th Amendment - 1962 - Created Nagaland State with special status (Art. 371A).
14th Amendment - 1962 - Incorporation of Puducherry Assembly and UT provisions.
21st Amendment - 1967 - Sindhi language added to 8th Schedule.
24th Amendment - 1971 - Parliament given power to amend Fundamental Rights (in response to Kesavananda Bharati case).
25th Amendment - 1971 - Inserted Article 31C – Directive Principles over Fundamental Rights.
26th Amendment - 1971 - Abolition of Privy Purses of former rulers.
31st Amendment - 1973 - Increased Lok Sabha seats from 525 to 545.
35th Amendment - 1974 - Sikkim became an associate state of India.
36th Amendment - 1975 - Sikkim became the 22nd state of India.
38th Amendment - 1975 - Emergency declaration by President made non-justiciable.
39th Amendment - 1975 - Election of President, VP, PM & Lok Sabha Speaker cannot be challenged in court (during Emergency).
42nd Amendment (Mini Constitution) - 1976 Added words “Socialist, Secular, Integrity” to Preamble; Fundamental Duties (Art. 51A); DPSPs strengthened; reduced judiciary’s power.
43rd Amendment - 1977 - Restored powers of judiciary curtailed by 42nd Amendment.
44th Amendment - 1978 - Replaced “internal disturbance” with armed rebellion for Emergency; strengthened Fundamental Rights.
52nd Amendment - 1985 - Anti-defection Law – Added 10th Schedule.
61st Amendment - 1989 - Reduced voting age from 21 to 18 years.
69th Amendment - 1991 - Gave special status to Delhi – National Capital Territory (NCT) with Legislative Assembly.
73rd Amendment - 1992 - Panchayati Raj system introduced – Added Part IX & 11th Schedule.
74th Amendment - 1992 - Urban Local Bodies / Municipalities – Added Part IXA & 12th Schedule.
76th Amendment - 1994 - Tamil Nadu’s 69% reservation included in 9th Schedule.
77th Amendment - 1995 - Reservation in promotions for SC/ST in government jobs.
86th Amendment - 2002 - Right to Education (RTE) made Fundamental Right (Art. 21A).
91st Amendment - 2003 - Limit on Council of Ministers to 15% of legislative strength; strengthened Anti-defection law.
92nd Amendment - 2003 - Added Bodo, Dogri, Maithili & Santhali languages to 8th Schedule.
93rd Amendment - 2005 - Reservation for OBCs in private educational institutions.
97th Amendment - 2011 - Added cooperative societies as Fundamental Right (Art. 19).
99th Amendment (Struck down in 2015) - 2014 - National Judicial Appointments Commission (NJAC) – struck down by Supreme Court.
100th Amendment - 2015 - India-Bangladesh Land Boundary Agreement.
101st Amendment - 2016 - Introduction of GST (Goods & Services Tax).
102nd Amendment - 2018 - Constitutional status to National Commission for Backward Classes (NCBC).
103rd Amendment - 2019 - 10% reservation for EWS (Economically Weaker Sections) in education and government jobs.
104th Amendment - 2020 - Extended reservation for SC/ST in Lok Sabha & State Assemblies till 2030; Anglo-Indian nomination abolished.
105th Amendment - 2021 - Gave states power to identify OBCs for reservation.