The Cis-Sutlej states were a group of Sikh states in the Punjab region lying between the Sutlej River to the north, the Himalayas to the east, the Yamuna River and Delhi district to the south, and Sirsa District to the west. These states fell under the suzeraignty of the Maratha Empire after 1785 before the Second Anglo-Maratha War of 1803-1805, after which the Marathas lost control of the territory to the British East India Company. The Cis-Sutlej states included Kalsia, Kaithal, Patiala State, Nabha State, Jind State, Thanesar, Maler Kotla, Ludhiana, Kapurthala State, Ambala, Ferozpur and Faridkot State, among others. While these Sikh states had been set up by the Dal Khalsa, they did not become part of the Sikh Empire and there was a mutual ban on warfare following the treaty of Amritsar in 1809 (in which the empire forfeited the claim to the Cis-Sutlej States, and the British were not to interfere north of the Sutlej or in the empire's existing territory south of the Sutlej), following attempts by Ranjit Singh to wrest control of these states from the British between 1806 and 1809 The Sikh crossing of the Sutlej, following British militarization of the border with Punjab (from 2,500 men and six guns in 1838 to 17,612 men and 66 guns in 1844, and 40,523 men and 94 guns in 1845), and plans on using the newly conquered territory of Sindh as a springboard to advance on the Sikh-held region of Multan, would eventually result in conflict with the British.