What indicates that the indus valley civilization had an organized government?

The had a very urban looking way of living. Their streets were laid out in a lattice design, superior engineering with amazing sewage and waste system. The nature of metropolitan town arrangement . There was no indication that their work force was made up of slaves.They had a working city which places high value on hygiene

In the last years of the seventeenth century, the gross value of trade that passed through Surat had been ` 16 million. By the 1740s, it had slumped to ` 3 million. With the passage of time, Surat and Hoogly decayed, while Bombay (Mumbai) and Calcutta (Kolkata) grew.