1642 - 16 May 1975
British protectorate, then Indian protectorate
Himalayas, Southern Asia
Incorporated into India
The kingdom of Sikkim was founded in 1642 by Phuntsog
Namgyal who became the first Chogyal (king).
Nepal occupied Sikkim in the late 18th century.
Following the defeat of Nepal by the British in the Gurkha
the Treaty of Sugauli (signed on 2nd December 1815 between Britain and
Nepal and ratified on 4th March 1816) forced the Nepalese to leave
The Treaty of Titalia (signed February 1817 between Britain
and Sikkim) made Sikkim a British protectorate.
In the mid 19th century, parts of southern Sikkim,
including Darjeeling, were incorporated into India.
In 1918, Sikkim gained full internal autonomy.
When India gained independence from Britain on 15th August
Sikkim became an Indian protectorate. This status was
on 5th December 1950 with the signing of the Indo-Sikkim Treaty.
On 16th May 1975, following a referendum, Sikkim's monarchy
was abolished and it was incorporated into India as its 22nd state.