Qutb-ud-din Aibak was the founder of the Delhi Sultanate. He was a slave of Muhammad Ghori and became the Sultan of Delhi after Ghori's death in 1206.

Iltutmish introduced the Iqta system, which was a system of land grants given to military officers in exchange for their service.

Iltutmish was the first Sultan of Delhi to issue gold coins. These coins were called the Tanka and were widely used in trade.

Alauddin Khalji established the Diwan-i-Kharaj, which was a department of the government responsible for collecting taxes.

Alauddin Khalji introduced the concept of market control, which involved fixing prices of essential commodities and regulating trade.

Muhammad bin Tughluq shifted his capital from Delhi to Daulatabad in 1327. However, he later abandoned this decision and moved the capital back to Delhi.

Ibrahim Lodi was the last Sultan of the Delhi Sultanate. He was defeated by Babur at the Battle of Panipat in 1526, which marked the end of the Delhi Sultanate.

Alauddin Khalji was known as the 'Alexander of India' due to his military conquests and his reputation as a fierce warrior.

Qutb-ud-din Aibak built the Qutub Minar in Delhi. It is one of the tallest minarets in the world and is a UNESCO World Heritage Site.

Firoz Shah Tughluq was known as the 'Just Sultan' due to his fair and just rule. He also undertook several public works projects, including the construction of canals and hospitals.

Akbar introduced the concept of 'Sulh-i-Kul' (universal peace) during his reign. This policy aimed to promote religious tolerance and harmony among different communities.

Alauddin Khalji was known as the 'Lion of Delhi' due to his bravery and military prowess.

Shah Jahan built the Red Fort in Delhi. It is one of the most iconic forts in India and is a UNESCO World Heritage Site.

Firoz Shah Tughluq was known as the 'Builder of Mosques' due to his construction of several mosques in Delhi and other parts of his kingdom.

Iltutmish introduced the concept of 'Iqta' (land grants) as a way to reward his military officers and administrators.