• According to the Anglo-Chinese Convention of 1890, representatives of the British Crown and the Emperor of China mutually agreed that Sikkim would remain a protectorate of the British Government. Sikkim itself was not consulted for the agreement.
• Under the Indo-Sikkim Treaty of 1950, Sikkim was to become a protectorate of the Indian Government while maintaining its autonomy. In 1952, the Sikkim Legislative Assembly was to consist of 17 members, five of whom were to be nominated by the Maharaja.
• Violent protests in the early 1970s when agitators demanded a more democratic constitution for Sikkim, as well as more powers for the elected representatives, led to a breakdown of law and order in the princely state. A May 8, 1973 agreement among the Indian government, the Chogyal (Maharaja) and representatives of political parties in Sikkim signalled the princely state’s first brush with democracy. In April 1975, the Sikkim Assembly abolished the institution of the Chogyal and declared Sikkim a constituent of India. The same month, the Indian government introduced the 36th Amendment to the Constitution making Sikkim a state of the country.

Source:Indian Express