When was the treaty of Mangalore was signed?

(A) 1786

(B) 1784

(C) 1770

(D) 1790

Hint:
 The treaty of Mangalore was signed between the British East India Company and Tipu Sultan who had defeated the British and left a powerful message to them proving that it is not easy to win India.

Complete step by step solution:
The treaty of Mangalore was signed in the year 1784 in Mangalore after which the Second Anglo-Mysore war ended.
The war had begun between Haider Ali and the British when Hyder had destroyed several areas under British control in the year 1780. British had sent their army to counter this attack but in return Hyder Ali and sent a larger army which was led by his son Tipu Sultan who defeated the British in the Pollilur region. This defeat was considered as one of the worst defeat of all time of Britishers in the Indian Territory. After this victory Tipu continued to defeat the British yet another time in 1782 at Tanjore where he fought against Colonel Braithwaite. After this defeat Britishers were determined to defeat tipu and take all territories back from him. At the end of 1781, they started their counter attack against Tipu and his force. After 3 years of the war, no one was ready to accept the defeat and thus the war was concluded in the year 1784 with the Treaty of Mangalore.

Hence, the correct answer is option B.

Note:
The Treaty was more in favor of Tipu rather than that of the British as the treaty was signed in Mangalore and the commissioner of the company in madras had to go to Mangalore to sign the treaty which made them feel humiliated.