who was in exile in this epic?
"The Pandavas".
Mahabharata
The Pandavas spend thirteen years in exile; many adventures occur during this time. 
who addressed delhi as one of the greatest city UNANSWERABLE what was this city's significance in the ancient medieval period? The city is believed to be the site of Indraprastha, the legendary capital of the Pandavas in the Indian epic "Mahabharata". what is one change that was brought in this place after independence? The Constitution (Sixty-ninth Amendment) Act, 1991 declared the Union Territory of Delhi to be formally known as the National Capital Territory of Delhi. The Act gave Delhi its own legislative assembly along Civil lines, though with limited powers. what is rrts here? They are the corridors that have been proposed by the National Capital Region Planning Board to facilitate the people travelling from nearby cities in NCR to Delhi. which princes are mentioned in the indian epic mentioned above? The "Kaurava" and the "Pāṇḍava". what is lakshagraha? The palace built by the architect "Purochana" that was made out of flammable materials like lac and ghee.
wiki:25678300
Mahabharata [SEP] Exile and return
The Pandavas spend thirteen years in exile; many adventures occur during this time. The Pandavas acquire many divine weapons, given by gods, during this period. They also prepare alliances for a possible future conflict. They spend their final year in disguise in the court of king Virata, and they are discovered just after the end of the year. At the end of their exile, they try to negotiate a return to Indraprastha with Krishna as their emissary. However, this negotiation fails, because Duryodhana objected that they were discovered in the 13th year of their exile and the return of their kingdom was not agreed.