After Maharaja Hari Singh acceded to India in 1947, negotiations continued for years regarding J&K’s exact status vis-à-vis the Indian Union.

Source: https://indianexpress.com/article/explained/explained-history/syama-prasad-mookerjee-jammu-kashmir-integration-9063688/

Following the Supreme Court's upholding the abrogation of Article 370, many invoked Dr Syama Prasad Mookerjee (1901-53), an ardent opponent of Kashmir’s ‘special status’ in the Indian Union.

Source: https://indianexpress.com/article/explained/explained-law/article-370-verdict-supreme-court-explained-live-updates-9061383/

Gya Village located in Ladakh is the home to an ice stupa built by youth of the village in the Indian Union territory.

Source: https://www.dailymail.co.uk/news/article-12893731/Stirring-images-African-elephant-sanctuary-run-indigenous-women.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

However, the story was different in Hyderabad, Osman Ali Khan, Asaf Jah VII who refused to join the Indian Union later surrendered to Indian Army following Operation Polo and Operation Caterpillar.

Source: https://www.siasat.com/happy-christmas-churches-began-to-appear-on-the-horizons-of-hyderabad-400-years-ago-2941403/

Instead, the Indian Parliament declared Kashmir an integral part of the Indian Union.

Source: https://www.pakistantoday.com.pk/2023/07/12/kashmir-martyrs-day-the-combat-continues/

In the year 1955, a report of the States Reorganization Commission was issued for organization of states of the Indian Union.

Source: https://www.dailyexcelsior.com/trifurcation-of-jammu-kashmir/

It is worth noting that Mizoram became the 23rd State of the Indian Union on 20th February, 1987 after the 53rd Amendment of the Indian Constitution, 1986.

Source: https://www.northeasttoday.in/2023/02/20/mizoram-celebrates-36th-state-day/