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The Indus Valley Civilization was Non-Aryan because it was Urban.

Harappan Civilization is also known as The Indus Valley Civilisation. It was a Bronze Age civilisation mainly in the northwestern regions of South Asia, extending from what today is northeast Afghanistan to Pakistan and northwest India.

Anthropology deals with the study of man. Similarly, Anthology deals with the collection of poems.

Second is the tool used by the first.

Second is the ultimate source for the first.

That is, Battery is the source of motorcycle. Similarly, Sun is the ultimate source of life.

Hence, Motorcycle : Battery :: Life : Sun.

Second is obtained from the first.

Physiology is a branch of biology. Similarly, mathematics is a branch of philosophy.

Hence, Physiology : Biology :: Metaphysics : Philosophy.

Mathematics is the theory of numbers and history is the theory of past events.

Hence Mathematics : Numbers :: History : Events.

Nautilus is a type of fish and teal is a type of duck.

Hence, Nautilus : Fish :: Teal : Duck.