WORLD HISTORY

Detailed explanation-1: -Why do scholars believe the Indus Valley had advanced civilization? The ruins of more than 1000 cities and towns show evidence of strong central planning and organization. The cities had defense walls protect protection from flooding sewer system, trash disposal systems, and wide organize streets.

Detailed explanation-2: -India’s first civilization developed in the Indus Valley because the Indus river system brings a steady source of irrigation water to the Indus Valley that made farming in this otherwise dry region possible. Regular river flooding also deposited fertile soil that was good for crops.

Detailed explanation-3: -How did ancient farmers use the water of the Indus River system to help grow crops? When the rivers flood, it left behind rich soil in which to grow crops. The farmers also developed an irrigation system using canals and ditches to supply water for crops.

Detailed explanation-4: -In 1920s, the Archaeological Department of India carried out excavations in the Indus valley wherein the ruins of the two old cities, viz. Mohenjodaro and Harappa were unearthed. In 1924, John Marshall, Director-General of the ASI, announced the discovery of a new civilisation in the Indus valley to the world.