Question

compare and contrast new Delhi with shahjahanabad

Answer 1

Shahjahanabad did not have a proper system of drainage and sewage disposal and the houses were also not very strong.
Delhi has an excellent system of drainage and sewage disposal and there a big bungalows and strong houses.

Answer 2

Shahjahanabad was where the current Walled City of Delhi stands. In other words, the area comprising Chandni Chowk and surrounding areas was called Shahjahanabad during the reign of Mughals, Shahjahan onwards.  

New Delhi is the National Capital of Modern India. Its foundation stone was laid in 1911, when the British decided to shift their administration to the 5000 year old historic capital city of India. The city got completed in 1931 and has served as the full-fledged National Capital ever since.  

New Delhi was created to rival the then astounding capital of Mughal India- Shahjahanabad.