Assertion: The Indus Valley civilisation is also called the Harappan Civilisation.
Reasoning: Indus Valley Civilisation is named after Harappa, the first site of this Civilisation.
Answer & explanation
Correct answer: option 1
The Indus valley civilization is also called the Harappan civilization because Harappa was the first site to be excavated in the early 1920s. Later many more sites were discovered around the Indus valley which made archaeologists call it as Indus Valley civilisation.