Q. Who became supreme Sikh leader by Sarbat Khalsa in March 1748?
Answer:
Jassa Singh Ahluwalia
Notes: Jassa Singh Ahluwalia was chosen by Sarbat Khalsa in 1748 as supreme Sikh leader, uniting Sikh Misls and leading Sikhs after the Mughal defeat at Amritsar. This marked the rise of Sikh political power in Punjab.