1500 BC
- Religious
The coming of the Vedas

Via Wikimedia Commons Indo-Aryan peoples spread into north-west India, bringing the Sanskrit hymns that became the Rigveda.
From the coming of Indo-Aryan peoples and the hymns of the Rigveda, through the spread of iron and settled farming across the Ganges plain and the shaping of the social order of varna, to the philosophical fire of the Upanishads and the rise of the first kingdoms and cities. Slide across a thousand years, remembered in an oral literature of astonishing power, in which the enduring framework of Indian religion and society was forged.

Indo-Aryan peoples spread into north-west India, bringing the Sanskrit hymns that became the Rigveda.
Around 1500 BC
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From the coming of Indo-Aryan peoples and the hymns of the Rigveda, through the spread of iron and settled farming across the Ganges plain and the shaping of the social order of varna, to the philosophical fire of the Upanishads and the rise of the first kingdoms and cities. Slide across a thousand years, remembered in an oral literature of astonishing power, in which the enduring framework of Indian religion and society was forged.
Indo-Aryan peoples spread into north-west India, bringing the Sanskrit hymns that became the Rigveda.
The hymns reveal a world of cattle-herding clans, warrior chiefs and gods of fire, storm and dawn.
Armed with iron, the Vedic peoples clear the forests of the Ganges plain and settle to farming.
In the Kuru-Panchala realm, elaborate rituals and a powerful priesthood bind kingship to the sacred.
Society is ordered into the four varnas — priests, warriors, producers and servants — the root of the caste system.
Forest sages turn from ritual to inner truth, teaching of the self, karma and release in the Upanishads.
As the Vedic age closes, the plain fills with rival kingdoms and a new wave of cities and trade.