Q. Who laid the foundation stone of Har Mandir Sahib at Guru Arjan Dev's invitation?
Answer:
Mian Mir
Notes: Guru Arjan Dev invited the Sufi saint Mian Mir of Lahore to lay the foundation stone of Har Mandir Sahib (Golden Temple) in 1589. This act symbolized religious harmony and the inclusive philosophy of Sikhism. Har Mandir Sahib is located in Amritsar, Punjab.