Why do scholars believe that the Indus Valley had a highly developed civilization? (1 point) Responses It left behind many written records. It left behind many written records. Its cities show a high level of planning. Its cities show a high level of planning. It had a highly organized religion. It had a highly organized religion. Its royal tombs hold many artifacts.

Answer 1

Scholars believe that the Indus Valley had a highly developed civilization primarily because its cities show a high level of planning. The urban layout, advanced drainage systems, and standardized fired brick sizes indicate sophisticated urban planning and organization.