The Delhi Sultanate literature began with the rise of Persian speaking people to the throne of the Sultanate of Delhi, naturally resulted in the spread of the Persian language in India. It was the official language and soon literary works in the language began to appear.
The construction of the Agra fort was started around 1565, when the initial structures were built by the Mughal Emperor Akbar, and subsequently taken over by his grandson Shah Jahan, who added most of the marble creations to the fort.
Who was the Mughal emperor at the time of Ahmad Shah Abdali's invasion of India?
The Peacock Throne (Takht-e-TauS) was built by Mughal Emperor Shahjahan under the commission of goldsmith Bedradru Khan in the year 1628. It was first put at Diwan-i-Aam (Agra Fort) and then moved to Diwan-i-Khas (Red Fort) during the reign of Mughal Emperor Aurangzeb. Nadir Shah invaded India in 1739 and took Peacock Throne and Koh-i-noor diamond with him.
Alberuni (Abu Rayham Beruni) was a persian scholar who came to India with Mahmud of Ghazni in 1017. He wrote Tarikh Al-Hind (History of India.). He was given the title of 'founder of Indology' and 'al-ustadh'.