Statement I is correct: The Rigveda explicitly mentions ashma chakra (a stone pulley-wheel) and ahava (wooden water pails fastened with leather ropes). This serves as definitive proof of a functional well-water irrigation mechanism, supporting the fact that agriculture could expand into the semi-arid plains of Punjab and Haryana away from riverbanks.
Statement II is not correct: Parashu (axe) and datra/sreni (sickle) are tools for forest clearing and harvesting—no direct link to well irrigation or draught-animal water drawing.
Statement III is correct: The domestication of oxen for pulling heavy plows (langala) and transport carts (anas) was deep-rooted since pre-Vedic times (Harappan period). This established history of utilizing draft animals directly supports Statement II, as these animals were naturally adapted to pull ropes and lift water from deep wells.
Source: NCERT — Ancient India (Class XI History), Page 3
WisdomLib — Ashma Chakra in the Rigveda
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