death in 1728, the Bhopal state remained under the influence of the Nizam. The state also paid tribute to the Marathas, who defeated the Mughals at the Battle of Bhopal in 1737.
Nawab Faiz Muhammed Khan (1742–1777) moved the capital from Islamnagar to Bhopal. The state became a British protectorate in 1818. Between 1819 and 1926, it was ruled by four women – Begums – unique in the royalty of those days. Qudsia Begum was the first woman ruler, who was succeeded by her only daughter Sikandar Begum, who in turn was succeeded by her only daughter, Shahjehan Begum. Sultan Jahan Begum was the last women ruler, who after 25 years of rule, abdicated in favour of her son, Hamidullah Khan. The rule of Begums gave the city its waterworks, railways, a postal system and a municipality constituted in 1907.
Bhopal was the second largest Muslim state in pre-independence India after Hyderabad. After the independence of India in 1947, the last Nawab expressed his wish to retain Bhopal as a separate unit in March 1948. Agitations against the Nawab broke out in December 1948, leading to the arrest of prominent leaders including Shankar Dayal Sharma. Later, the political detainees were released, and the Nawab signed the agreement for Bhopal's merger with the Union of India on 30 April 1949.
The Bhopal state was taken over by the Union Government of India on 1 June 1949. Sindhi refugees from Pakistan were accommodated in Bairagarh, a western suburb of Bhopal (now renamed to Sant Hirdaram Nagar). According to the States Reorganization Act of 1956, the Bhopal state was integrated into the state of Madhya Pradesh, and Bhopal was declared as its capital. The population of the city rose rapidly thereafter.
Bhopal disaster
On 3 December 1984, a Union Carbide Corporation pesticide plant in Bhopal leaked around 32 tons of toxic gases, including methyl isocyanate gas which led to the worst industrial disaster to date. The official death toll was