Answer:
AGRA
- Ptolemy was a geographer who first got the records and mentioned its mordern name 'Agra' in 11TH century
- Agra was mentioned in Mahabharata an ancient Sanskrt epic
- It was first called 'Agravana' which translates to 'front of the forest'
MUMBAI
- India's first ever train ran between Mumbai and Thane
- World's most expensive building is in Mumbai
- Mumbai was the first city to start a bus service in India
DELHI
- Second most populated city in the world
- the cith experiences Frequent Earthquakes
Second wealthiest city in India
LAHORE
- Second largest city in Pakistan
- it contains the walled city
- it is a major center for Pakistan's publishing industry