Step 1: Recall the Anglo-Mysore Wars.
There were four wars between Mysore and the British, each ending in a treaty.
Step 2: Match treaties to wars.
The First War ended with the Treaty of Madras (1769). The Second ended with the Treaty of Mangalore (1784).
Step 3: The Third War.
The Third Anglo-Mysore War (1790-1792) was fought between Tipu Sultan and an alliance of the British, Marathas and the Nizam. After the siege of Seringapatam, Tipu signed the Treaty of Seringapatam in 1792.
Step 4: The Fourth War.
The Fourth War (1799) ended with Tipu's death, but no Treaty of Seringapatam was signed then.
Step 5: Conclude.
The Treaty of Seringapatam followed the Third Anglo-Mysore War.
Answer: Third Anglo-Mysore War