Final answer:
The first compilation of the Guru Granth Sahib was installed in Harmandir Sahib in 1604 A.D. during Jahangir's reign. It is a key spiritual text for Sikhs, who faced significant trials under Mughal rule.
Step-by-step explanation:
The first compilation of the Guru Granth Sahib was installed in the Harmandir Sahib, also known as the Golden Temple, in the year 1604 A.D.. This sacred text is central to the religious life of Sikhs, bringing together the teachings of the Sikh Gurus as well as other scholars of the time.
The installation of the Guru Granth Sahib coincided with the period when the Mughal Emperor Jahangir ascended to the throne, following his father Akbar. Sikhism, which was founded by Guru Nanak Dev Ji, underwent significant trials during the Mughal period, facing persecution from rulers like Aurangzeb who later attempted to influence the succession of the Sikh Gurus.
The Harmandir Sahib itself is a symbol of both the spiritual and cultural identity of Sikhism and has a central place in their worship and community life. It stands today as a testament to the resilience and devotion of the Sikh people.