The Holkar dynasty of Indore signed the Treaty of Mandsaur with the British, accepting British supremacy, in the year:

The Holkar dynasty of Indore signed the Treaty of Mandsaur with the British on 6 January 1818, during the Third Anglo-Maratha War, accepting British supremacy.

Background:

• The Holkars were one of the major Maratha families, ruling from Indore in Malwa.
• Under Yashwant Rao Holkar, they fought the British in the Second Anglo-Maratha War (1803-1805).
• After his death in 1811, the Holkar state was ruled by his widow, Tulsi Bai, on behalf of the young Malhar Rao Holkar II, and was weakened by internal disputes.

The Third Anglo-Maratha War (1817-1818):

• The Holkar army joined the war against the British.
• It was decisively defeated at the Battle of Mahidpur (21 December 1817) by a British force under Sir Thomas Hislop and Sir John Malcolm.
• Tulsi Bai had been murdered by some of her own officers shortly before the battle.

The Treaty of Mandsaur (1818):

• The Holkars gave up their claims over Rajput states and ceded territories south of the Narmada and other areas.
• They agreed to accept a British Resident at Indore.
• They agreed to maintain a British subsidiary force.
• They accepted British supremacy and gave up the right to have relations with other states without British permission.
• Holkar remained a princely state under British protection until 1947.

About Mandsaur:

It is a town in western Madhya Pradesh, known in ancient times as Dashapura.

Famous Holkar rulers:

Malhar Rao Holkar: the founder of the dynasty (18th century).

Ahilyabai Holkar (ruled 1767-1795): a famous and pious queen, who built and restored many temples and ghats across India, including the Kashi Vishwanath temple in Varanasi (1780) and the Somnath temple; her capital was Maheshwar.

Yashwant Rao Holkar: fought the British.

The Third Anglo-Maratha War:

It ended the power of the Peshwa, the Holkar, and the Bhonsle of Nagpur.

Why not the other options?

• ✗1805 was the end of the Second Anglo-Maratha War.
• ✗1817 was the year the Third war began.
• ✗1857 was the year of the Revolt.