Final answer:
Bhai Mardana Ji was the Muslim who accompanied Guru Nanak Dev Ji with a rebeck. Sikhism, founded by Guru Nanak in the 15th century, was spread in the Punjab region. Guru Tegh Bahadur's execution by Mughal Emperor Aurangzeb fueled Sikh resistance.
Step-by-step explanation:
The Muslim who accompanied Guru Nanak Dev Ji with a rebeck, a musical instrument he invented himself, was Bhai Mardana Ji. Bhai Mardana was a loyal companion of Guru Nanak, and they met when Guru Nanak was 16 years old. Bhai Mardana played the rebeck while Guru Nanak sang hymns and preached the teachings that laid the foundation for Sikhism.
This religion emerged in the 15th century and was founded by Guru Nanak Dev Ji in the Punjab region of what is now Pakistan and India. Sikhism represents a synthetic blend of Hindu and Muslim elements, with an emphasis on universal equality and spirituality.
Guru Tegh Bahadur, the ninth Guru of the Sikhs, was executed by Mughal Emperor Aurangzeb. This act was part of the religious persecution that Sikhs faced during that period, and it sparked further resistance to Mughal authority.