What was sugauli treaty?​

The Treaty of Sugauli, the treaty that established the boundary line of Nepal, was signed on 2 December 1815 and ratified by 4 March 1816 between the East India Company and Raj Guru Gajaraj Mishra with Chandra Shekhar Upadhaya for Nepal following the Anglo-Nepalese War of 1814-16. The treaty represented a Nepali surrender to the British and contained the cession of Nepal's western territory to the British East India Company.

Explanation:

the correct answer is:   the domino theory states that if one country in a region came under the influence of communism, then the surrounding countries would follow in a domino effect.