At its peak, in the 19th century, the empire extended from the Khyber Pass in the west, to Kashmir in the north, to Sindh in the south, running along Sutlej river to Himachal in the east. After the death of Ranjit Singh, the empire weakened, leading to conflict with the British East India Company. The hard-fought first Anglo-Sikh war and second Anglo-Sikh war marked the downfall of the Sikh Empire, making it among the last areas of the Indian subcontinent to be conquered by the British.