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The Harappan civilization, one of the earliest urban cultures, flourished in the northwestern regions of South Asia around 2500 BCE. Its cities, such as Mohenjodaro and Harappa, displayed advanced urban planning, including well-laid streets, sophisticated drainage systems, and large granaries. The civilization engaged in long-distance trade, with evidence of contact with Mesopotamia. Artifacts like seals, beads, and pottery highlight their craftsmanship. The decline of the Harappan civilization remains a topic of debate, with theories ranging from climatic changes to invasions and natural disasters.
What is one theory about the decline of the Harappan civilization?