The city houses all the legislative and administrative authorities or bodies and all judicial and quasi-judicial authorities of India. The Supreme Court of India, being the uppermost court of appeal, is also located in Delhi.
Mumbai, formerly known as Bombay, being the hub for commercial activity, is ranked amongst the top 10 powerful centres in the world for global financial and capital transactions.
Bangalore, being the Information Technology (IT) hub of the country is also known as the Indian Silicon Valley. The city is not only famous for its IT sector but also its growing cosmopolitan outlook.
Chennai, formerly known as Madras, is not only the second-largest hub of Information Technology and software-related services but is also the centre of all activities for the automobile industry in the country.