Which of the following hill station was wrested from the rulers of Sikkim in 1835?

Darjeeling

The founding and settling of hill stations were initially connected with the needs of the British Army.
Simla was founded during the course of the Gurkha War (1815-16); the Anglo-Maratha War of 1818 led to British interest in Mount Abu; and Darjeeling was wrested from the rulers of Sikkim in 1835.