The correct answer is (B). Key Points ​​Seven Stages of formation of Rajasthan (1948-1956) S.No. Name of Group States Date of Integration 1 Matsya Union Alwar, Bharatpur, Dholpur, Karauli 18-03-1948 2 Rajasthan Union Banswara, Bundi, Dungerpur, Jhalawar, Kishangarh, Kota, Pratapgarh, Shahpura, Tonk. 25-03-1948 3 United States of Rajasthan Udaipur also joined with the other Union of Rajasthan. 18-04-1948 4 Greater Rajasthan Bikaner, Jaipur, Jaisalmer & Jodhpur also joined with the United State of Rajasthan. 30-03-1949 5 United States of Greater Rajasthan Matsya Union also merged in Greater Rajasthan 15-05-1949 6 United Rajasthan 18 States of United Rajasthan merged with Princely State Sirohi except for Abu and Delwara. 26-01-1950 7 Re-organised Rajasthan The former part 'C' State of Ajmer, Abu Road Taluka, a former part of princely State Sirohi which was merged in former Bombay, State and Sunel Tappa region of the former Madhya Bharat merged with Rajasthan and Sironj subdistrict of Jhalawar district was transferred to Madhya Pradesh under the State Re-organisation Act, 1956. 01-11-1956