Sikhism achieved a series of military victories and created a Sikh Empire in 1799. The Sikh empire had its capital in Lahore, spread over almost comprising what is now northwestern Indian subcontinent. The Sikh Empire entered into a treaty with the colonial British powers, with each side recognizing Sutlej River as the line of control and agreeing not to invade the other side. Ranjit Singh's most lasting legacy was the restoration and expansion of the Harmandir Sahib, most revered Gurudwara of the Sikhs, with marble and gold, from which the popular name of the "Golden Temple" is derived. After the death
1984 anti-Sikh riots to remove militant religious leader Jarnail Singh Bhindranwale and his armed militants from the buildings of the Harmandir Sahib complex in Amritsar, Punjab. Bhindranwale died and militants were removed from the temple complex. The military action in the temple complex was criticized by Sikhs worldwide who had interpreted it as an assault on Sikh religion. Four months after the operation, on 31 October 1984, Indira Gandhi was assassinated in vengeance by her two Sikh bodyguards, Satwant Singh and Beant Singh. Public outcry over Gandhi's death led to the killings of Sikhs in the ensuing riots. In the aftermath of the