Answer:
1) They gave us the concept of zero (0)
2) The gave of the concept of the decimal system
3) They made seminal contributions to the study of trigonometry, algebra, arithmetic and negative numbers among other areas
I tried, hope this helps :)
The mental undertakings that vary markedly from normal waking consciousness are recognized as altered states of consciousness. An altered state of consciousness is any state which is knowingly unlike from a normative awakening beta wave state. The manifestation defines persuaded variations in one's mental state which is virtually constantly temporary the synonymous phrase is altered states of awareness.
Maybe because the Buddha set examples to his people of how to live in the form of art. Also, maybe because some people worship the Buddha as a statue and making a statue is n the form of art.