Reflections on Indus valley civilization

The indus valley civilisation so far, in my opinion, is the most advanced civilization I have studied so far. The civilization contains a citadel, a large port where people can take shelter in an event of an invasion. A granary, where people can store food like oat, wheat and barley. The occupations include priest who carry out religious rituals,craftsmen who make tools and weapons,farmerswho produce food and traders who sells as well as purchase. There are even priest who carry religious purposes. The great bath is also used for religious purpose...