Explanation

• Qutab ud Din Aibak was the first ruler of the Muslim dynasty in Sub-Continent
• ......
• Qutb al-Din Aibak  was a general of Muhammad Ghori.
  
• Qutab ud Din Aibak was in charge of the Ghurid territories in northern India, and after Muhammad Ghori's death.
• he became the ruler of an independent kingdom that evolved into the Delhi Sultanate ruled by the Mamluk dynasty.