Timur Lang, also known as Tamerlane, invaded India in 1398 AD when the Delhi Sultanate was under Nasiruddin Mahmud Tughlaq and suffering from political weakness. Timur’s army defeated the Sultan’s forces and plundered Delhi, causing widespread death, destruction and economic collapse. His invasion severely weakened the Sultanate’s power and paved the way for later Afghan and Mughal forces to gain influence. The event marked one of the most devastating invasions in Indian medieval history and greatly disrupted administrative and social stability.