1001 Space Earth Nature History First Civilisations Ancient Egypt Biblical Times Ancient Greece Ancient Rome Chinese, Japanese Civilisations Indian Civilisation African Civilisation The Early Americas The Rise of Islam The Middle Ages The Renaissance Civil War and Revolution The Industrial Revolution Two World Wars 20th-century Achievements Human World Science and Technology	What was the Indus Valley civilisation? India's first major civilisation flourished for 1,000 years from about 2500 BC along the Indus Valley. Its great cities, Mohenjodaro and Harappa, were ruled by priests rather than kings. It is thought that the cities were eventually abandoned because of environmental changes. India   Previous: Back Book: 1001 Section: History Chapter: Indian Civilisation