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50 Years of Sikkim

Sikkim Integration Timeline

  • 1642: The Namgyal dynasty was founded by Phuntsog Namgyal, first Chogyal.


  • 1817: The Treaty of Titalya makes Sikkim a British protectorate.


  • 1835: Sikkim cedes Darjeeling to British


  • 1861: The Treaty of Tumlong gives Britain control over Sikkim’s external affairs.


  • 1947: The Standstill Agreement with India maintains status quo.

  • 1950: The Indo-Sikkim Treaty makes Sikkim an Indian protectorate, with India assuming responsibility for the external relations, defense, and strategic communications of Sikkim. 


  • 1973: The Tripartite Agreement introduces a democratic assembly.



  • 1974: The Sikkim Congress wins the elections; the 35th Amendment makes Sikkim an associate state.


  • 1975:

    • April 14: Referendum votes to abolish the monarchy and join India.

    • May 16: The 36th Amendment makes Sikkim India’s 22nd state.



Category

Name/Details

National Parks

1. Khangchendzonga National Park (UNESCO World Heritage Site)


- Largest protected area in Sikkim


- Covers ~1,784 sq. km


- Home to snow leopards, red pandas, Himalayan tahr, etc.

Major Rivers Originating in Sikkim

1. Teesta River


- Origin: Tso Lhamo Lake (North Sikkim)


- Lifeline of Sikkim and North Bengal


2. Rangeet River


- Origin: Rathong Glacier (West Sikkim)


- Tributary of Teesta

Tribes of Sikkim

1. Lepchas (Indigenous tribe)


- Language: Lepcha


- Mostly live in Dzongu (North Sikkim)



2. Bhutias


- Tibetan origin


- Speak Sikkimese or Bhutia



3. Nepalis (including various sub-tribes)


- Largest ethnic group


- Includes subgroups like Gurung, Rai, Limbu, Magar, Tamang, Newar


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