Mention any two changes that were observed after 1900 BCE in Harappan civilisation. What could have brought these changes ? Explain.
Changes observed after 1900 BCE in Harappan Civilization:
i. There is a decline in the material culture and disappearance of distinctive artefacts.
ii. Long distance trade disappeared along with craft specialisation.
Reasons for changes:
i. Climatic change and deforestation.
ii. Excessive floods and overuse of the landscape.