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
Raja Sahib of Mahmudabad Raja Sahib of Mahmudabad Mohammad Amir Ahmed Khan , Raja of Mahmudabad (5 November 1914 – 14 October 1973) popularly known as Raja Sahib of Mahmudabad was a prominent politician and leader of the All India Muslim League, during the Pakistan Movement. He served as Managing Trustee from 1940–1944 of Madrasatul Waizeen, a centre of Shia Islamic education founded by his father located in Lucknow. He carried on the family tradition and was an accomplished poet in Urdu language and Farsi. He composed a number of ruba'iyat, salaams, and marsiya as well as some ghazals and nazms under the takhalus