About formation of Rajasthan:
Every year State Day of Rajasthan is celebrated on 30th March.
Rajasthan, formerly known as Rajputana, was established on March 30, 1949.
The state is mainly composed of Rajputs lands, including 19 former princely states, two chiefships and the Ajmer-Merwara districts of the British.
On August 15, 1947, the princely states was merged into the union of India, but the reunification could only be completed later.
The 4 princely states of Alwar, Dhaulpur, Karauli, and Bharatpur formed the Matsya Union and it was established on March 17, 1948.
The Rajasthan Union was established in March 25th, 1948 by the union of states: Banswara, Bundi, Dungarpur, Jhalawar, Kishangarh, Pratapgarh, Shahpura, Tonk, and Kota.
The emperor of Udaipur decided to join the Rajasthan Union three days after the establishment of the Rajasthan Union.
Rajasthan State is established and inaugurated by Jawaharlal Nehru on April 18, 1948.
On March 30, 1949, the four states will be forthcoming Jodhpur, Jaipur, Bikaner and Jaisalmer joined this integration, and the area was later called Greater Rajasthan.
The Matsya Union merged with Rajasthan on May 15, 1949.
So far, the only state-Sirohi has not yet joined the federation and later it was joined the Federation on 26th January, 1950.
During the state reorganization in 1956, the Ajmer-Merwara region merged with Rajasthan, while Bhanpura Tehsil in Madhya Pradesh and Abu Tehsil in Gujarat also merged with Rajasthan at that time.