Class 6Social ScienceIn the Earliest Cities

Mystery of Decline

Harappan civilisation declined around 1900 BCE. Theories: floods, droughts (climate change), earthquakes, Aryan invasion (now doubted). Cities were abandoned gradually. The Harappan script has NOT been deciphered yet — a major archaeological mystery. Even today, we don't know exactly what happened!

How to study this topic

Read the core explanation once without solving.
Open the formula links below and connect them with the topic meaning.
Practice the 10 example pages one by one.
Use the AI ask page for text, voice or image-based doubts.

10 example pages

Concept check 1

For Class 6 Social Science, explain or solve a mystery of decline question from the chapter "In the Earliest Cities". Focus on concept check and show the working clearly.

Definition to application 2

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Formula warm-up 3

For Class 6 Social Science, explain or solve a mystery of decline question from the chapter "In the Earliest Cities". Focus on formula warm-up and show the working clearly.

Reasoning practice 4

For Class 6 Social Science, explain or solve a mystery of decline question from the chapter "In the Earliest Cities". Focus on reasoning practice and show the working clearly.

Board-style short answer 5

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Mistake correction 6

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Visual interpretation 7

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Applied word problem 8

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Revision challenge 9

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Exam recap 10

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