Prelude :In the “Geography of History” series we have learned the evolution of mankind from hunting gathering societies to agricultural societies.The invention of agriculture led to far-reaching changes in human societies. One important result was the emergence of cities and civilizations. This series covers one of the most important civilization – Harappan Civilization – be it in prelims or  GS mains or History optional . There are certain themes that UPSC has been asking for many years and will keep on asking years to come.Few of such themes are –  Buddhism, Harappan civilization, Gupta age , Akbar’s policy etc.Hence from [...]