The term "Khilji" refers to a dynasty that ruled parts of the Indian subcontinent during the 13th and 14th centuries. The most notable ruler of this dynasty was Alauddin Khilji, known for his military conquests and administrative reforms. The Khilji dynasty is recognized for its efforts to expand the territory of the Delhi Sultanate and for introducing significant changes in the economy and governance. The Khilji dynasty is also famous for its architectural contributions, including the construction of the Alai Darwaza and the Qutb Minar complex. Their reign marked a period of cultural and economic growth, as well as increased trade with regions beyond India. The dynasty eventually declined due to internal strife and external invasions.