Dardic group of language belongs to which language family?

The tomb in Mehrauli, Delhi, built in the late 13th century, has the earliest surviving true arch in India. A true arch is built from wedge-shaped stones (voussoirs) held in place by a keystone at the top, so it spreads weight sideways.

Dhanyakataka is the ancient Dharanikota, beside Amaravati on the Krishna river in present-day Andhra Pradesh. Dhanyakataka was a capital of the Satavahanas, who ruled the Deccan around the beginning of the Common Era, and the great Amaravati stupa stood close by.

The gardens behind Rashtrapati Bhavan in New Delhi were designed by Edwin Lutyens, who combined the Mughal charbagh plan of water channels and terraces with English flower beds and lawns, and they were long called the Mughal Gardens.

Nek Chand Saini, a roads inspector in Chandigarh, began building figures and courtyards out of broken tiles, bangles, sockets and other waste in a gorge near the Sukhna Lake, and the work he did largely alone became the Rock Garden, now one of the best known sights of the city.

Hyder Ali of Mysore began the Lalbagh garden at Bengaluru in the eighteenth century in the Mughal manner, and his son Tipu Sultan extended it and added trees and plants collected from many countries.