Period of rule of Qutb-ud-din Aibak: 1206 - 1210 A.D.

Qutb-ud-din Aibak was the founder of the Slave dynasty in India. He was a former slave who rose to the position of the Sultan of Delhi after serving under the Ghurid Empire. He ruled for a brief period from 1206 to 1210 A.D.

Establishment of Delhi Sultanate
Qutb-ud-din Aibak established the Delhi Sultanate after he defeated the last Rajput king of Delhi, Prithviraj Chauhan, in the Battle of Tarain. He made Delhi his capital and began to consolidate his power in the region.

Administration
During his short reign, Qutb-ud-din Aibak focused on establishing a strong administration. He appointed governors in different regions and divided the empire into provinces. He also introduced a new system of revenue collection called the "iqta" system, which allowed officials to collect taxes on behalf of the state.

Construction of Qutub Minar
One of the most significant contributions of Qutb-ud-din Aibak was the construction of the Qutub Minar. The tower was built to commemorate the victory over the Rajputs and is considered a masterpiece of early Islamic architecture.

Death and Succession
Qutb-ud-din Aibak died in 1210 A.D. from injuries sustained while playing polo. He was succeeded by his son-in-law, Iltutmish, who continued the policies of his predecessor and expanded the empire further.

Conclusion
Qutb-ud-din Aibak's brief reign marked the beginning of the Delhi Sultanate in India. His administrative and architectural achievements laid the foundation for the future growth and development of the empire.