Q. Who renamed Sirhind to Fatehgarh Sahib?
Answer:
Maharaja Karam Singh
Notes: After Sikhs' victory over Afghan rule in 1764, Sirhind was renamed Fatehgarh Sahib by Maharaja Karam Singh of Patiala, who also built historic gurdwaras honoring Sikh martyrs. The town is now the district headquarters and an important Sikh pilgrimage site in Punjab.