The Indus River Valley was once home to the most widespread and peaceful of the ancient civilizations the Indus Valley civilization. This society lasted from roughly 3300 B.C. to 1300 B.C., yet it was only recently rediscovered within the last one hundred years. As you read, take notes on what made the ancient Indus Valley civilization unique and different from other ancient civilizations. This informational text is for grade 9. Indus Valley Mysteries by USHistory.org is licensed under CC BY 4.0.