This provision (Article 75(1A) and 164(1A)) was added by the 91st Constitutional Amendment Act, 2003 (matching with List-II option ii, 91st Amendment, 2004 - the year 2004 likely refers to the effective date). 162. Mizoram has been granted the status of a State by which of the following Constitutional Amendments ? - The 53rd Amendment Act of 1986 conferred statehood upon Mizoram and made specific provisions relating to the Legislative Assembly of Mizoram, including special safeguards for Mizo social and religious practices. - Mizoram became the 23rd state of the Indian Union.