Question

what are the various theories given to explain the decline of the Indus valley civilisation​

Answer 1

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ᴍᴀɴʏ sᴄʜᴏʟᴀʀs ʙᴇʟɪᴇᴠᴇ ᴛʜᴀᴛ ᴛʜᴇ ᴄᴏʟʟᴀᴘsᴇ ᴏғ ᴛʜᴇ ɪɴᴅᴜs ᴠᴀʟʟᴇʏ ᴄɪᴠɪʟɪᴢᴀᴛɪᴏɴ ᴡᴀs ᴄᴀᴜsᴇᴅ ʙʏ ᴄʟɪᴍᴀᴛᴇ ᴄʜᴀɴɢᴇ. sᴏᴍᴇ ᴇxᴘᴇʀᴛs ʙᴇʟɪᴇᴠᴇ ᴛʜᴇ ᴅʀʏɪɴɢ ᴏғ ᴛʜᴇ sᴀʀᴀsᴡᴀᴛɪ ʀɪᴠᴇʀ, ᴡʜɪᴄʜ ʙᴇɢᴀɴ ᴀʀᴏᴜɴᴅ 1900 ʙᴄᴇ, ᴡᴀs ᴛʜᴇ ᴍᴀɪɴ ᴄᴀᴜsᴇ ғᴏʀ ᴄʟɪᴍᴀᴛᴇ ᴄʜᴀɴɢᴇ, ᴡʜɪʟᴇ ᴏᴛʜᴇʀs ᴄᴏɴᴄʟᴜᴅᴇ ᴛʜᴀᴛ ᴀ ɢʀᴇᴀᴛ ғʟᴏᴏᴅ sᴛʀᴜᴄᴋ ᴛʜᴇ ᴀʀᴇᴀ.