Mughal Empire

Alal-ud-din Khilji was the most famous Khilji ruler because of his military conquests and administrative reforms. He expanded the Delhi Sultanate to its greatest extent, conquering vast territories in Northern India. He also implemented several administrative reforms, such as introducing a new currency system and establishing a spy network. His reign is also known for his strict enforcement of law and order, as well as his patronage of art and culture. Overall, Alal-ud-din Khilji's achievements and contributions make him the most famous Khilji ruler.

Nur Jahan was the wife of Jahangir. She was a powerful and influential empress during the Mughal Empire. She played a significant role in the administration and political affairs of the empire. Nur Jahan was known for her intelligence, beauty, and strong personality. She had a great influence on Jahangir and was involved in decision-making processes. She was also known for her patronage of the arts and architecture, making her one of the most prominent and influential women in Mughal history.

Akbar is considered the most famous ruler of the Mughals because of his significant contributions to the empire. He was known for his policy of religious tolerance, which helped to unify the diverse population of the empire. Akbar also implemented administrative reforms and promoted the arts and culture, resulting in a flourishing period for the Mughal Empire. His reign is often seen as a golden age for the empire, making him the most renowned ruler among the Mughals.

After Iltumish, the ruler who ascended to the throne was Razia Sultan. Razia Sultan was the first female ruler of the Delhi Sultanate and ruled from 1236 to 1240. She was the daughter of Iltumish and was chosen as his successor due to her intelligence and leadership qualities. However, her reign was short-lived and faced opposition from the nobles who were not ready to accept a female ruler. Despite her efforts to establish herself as a capable ruler, she was eventually overthrown and replaced by Ghiyas-ud-din-Balban.

Qutub-ud-din-Aibak is the correct answer for establishing the Delhi Sultanate. He was a Turkish slave who was appointed as the governor of Delhi by his master, Muhammad Ghori. After Ghori's death, Qutub-ud-din-Aibak declared himself as the ruler and established the Delhi Sultanate in 1206. He built the famous Qutub Minar in Delhi, which stands as a symbol of his reign and the beginning of the Sultanate era in India.

Iltumish completed the Qutub Minar.