Qutbuddin Aibak, a former slave of Muhammad Ghori, founded the Slave Dynasty in 1206 AD after Ghori’s death. As the first Sultan of Delhi, he consolidated Turkish rule in North India and laid the foundation for future expansion. His successors, especially Iltutmish, further strengthened the dynasty, establishing stable governance in the region. ANSWER: (A) Qutbuddin Aibak