Ahmedabad is the largest city in Gujarat, India and now the second largest metropolitan city by area after delhi, with an area of 10,000 sq.km. The city was founded in the 15th century by Sultan Ahmed Shah on the Sabarmati river , and served as capital of the Sultanate of Gujarat. The historic center of Ahmedabad is presently a thriving business district. Ahmedabad is also an important industrial center, with chemical and textile industries. Ahmedabad is often described as the Manchester of the East, because of its once-booming textile industry.