The Harappan Civilisation, flourishing from around 2500 BCE to 1500 BCE in the north-western part of the Indian subcontinent, is recognized for its advanced urban planning, unique craftsmanship, and complex social life. Archaeological discoveries such as city layouts, crafts, trade systems, and religious practices provide insights into its sophisticated culture. The decline of this civilisation is attributed to various factors including natural disasters, climate change, and potential invasions.