Sikh gurus were responsible for the leadership of our Sikh religion and community for the first 200 years or so of its existence. Guru Nanak Dev ji (the founder) was the first guru, and he chose one of his followers to be the guru who succeeded him. After that, the guru succession happened along mostly hereditary lines. The "Ten Gurus" are the most common image or pictorial representation in the Sikh religion. Each of the ten Sikh gurus accomplished important things for the Sikh community. However, other than Guru Nanak ji, two of the gurus are especially important because of their…