Question

what happened to cities under colonial rule

Answer 1

because of Colonial rule some cities were developed and somewhere destroy....

Answer 2

What Happened to Cities Under Colonial Rule?

In most parts of the Western world, modern cities emerged during and due to industrialisation. In Britain, for example, industrial cities  like Leeds and Manchester grew rapidly in the 19th and 20th centuries.
In the late 18th century, Calcutta, Bombay, and Madras rose in importance as  Presidency cities, centres of British power in India. At the same time, historically important ports and cities such as Machilipatnam, Surat, and Seringapatam declined.The historic Mughal imperial city of Delhi also became a dusty provincial town in the 19th century before it was rebuilt as the capital of British India.
How Many 'Delhis' Before New Delhi?The area now known as Delhi has been a capital for more than a 1000 years. As many as 14 capital cities were founded in a small area of about 60 square miles on the left bank of the river Jamuna, and of them, the major ones are the capitals built between the 12th and 17th centuries.The most splendid capital of them all was built by Shah Jahan. He started building Shahjahanabad in 1639, and it consisted of a fort-palace complex, now known as the Red Fort, and a city adjoining it.
Delhi during Shah Jahan’s time was also a centre of Sufi culture, and it had several dargahs, khanqahs, and idgahs.But even that was no ideal city, as there were sharp divisions between the rich and the poor.