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
Gurudwara Bangla Sahib Gurudwara Bangla Sahib Gurudwara Bangla Sahib () is one of the most prominent Sikh gurdwara, or Sikh house of worship, in Delhi, India and known for its association with the eighth Sikh Guru, Guru Har Krishan, as well as the pool inside its complex, known as the "Sarovar." It was first built as a small shrine by Sikh General Sardar Bhagel Singh in 1783, who supervised the construction of nine Sikh shrines in Delhi in the same year, during the reign of Mughal Emperor, Shah Alam II. It is situated near Connaught Place, New Delhi on Baba Kharak Singh Marg