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Ancient India

History (BA) · Indian history · free study notes for exams, placements and interviews

In short

Ancient India covers the Indian subcontinent from the Stone Age through the Harappan cities, the Vedic and later Vedic societies, the Mahajanapadas and heterodox religious movements, the Mauryan, post-Mauryan and Gupta empires, down to roughly the death of Harshavardhana in 647 CE. It is reconstructed from archaeology, inscriptions, coins, monuments and texts rather than from continuous dated chronicles, so method and evidence matter as much as narrative. The period supplies India's foundational political ideas (dharma, *chakravartin*, *saptanga* state), its classical languages and sciences, and the legal-constitutional symbols still in use — the Sarnath lion capital and the Ashoka Chakra. It is examined in BA/MA History papers, UGC-NET History, UPSC and State PSC history and art-and-culture sections, and NTA/CUET entrance tests, and is used professionally in ASI, museums, archives, heritage tourism, textbook publishing and content work.

Explained

Sources and how the period is reconstructed

Prehistory, the Harappan Civilisation and the transition

Vedic society: early and later

Mahajanapadas, the second urbanisation, Buddhism and Jainism

Mauryan empire and its legacy

Post-Mauryan and Sangam India (c. 200 BCE – 300 CE)

Gupta age, the peninsula and Harsha

Key points

Formulas and examples

History has no formulas; the quantitative work in this topic is chronology, dating and conversion between era systems. The rules used in exams are these:

Years BCE run backwards: an event in 321 BCE is earlier than one in 261 BCE.
Gap across the BCE/CE boundary = (BCE year) + (CE year) − 1 (there is no year zero).
Century rule: year Y CE lies in century ⌈Y/100⌉; year Y BCE lies in the ⌈Y/100⌉th century BCE.
Saka era: CE year = Saka year + 78 (for dates after the Saka new year, Chaitra 1 ≈ 22 March).
Vikrama Samvat: CE year = VS year − 57 (approximately; VS begins in Kartika/Chaitra by region).
Gupta era: CE year = Gupta year + 319 (approximately; epoch 319–20 CE).
Radiocarbon: N = N₀ (1/2)t/5730, where t is years, N₀ the original ¹⁴C content and 5730 years the half-life (Libby's 5568-year half-life is still quoted in older reports — note which is used).

Example 1 — length of the Mauryan empire. Chandragupta's accession c. 321 BCE to the last Maurya, Brihadratha, c. 185 BCE. Duration = 321 − 185 = 136 years, i.e. about one and a half centuries.

Example 2 — Kalinga war to Ashoka's death. The war fell in Ashoka's 8th regnal year, c. 261 BCE; he died c. 232 BCE. Reign after Kalinga = 261 − 232 = 29 years, so roughly three-quarters of his 36-year reign (268 − 232) followed the conversion to *dhamma* — which is why the edicts are overwhelmingly post-Kalinga.

Example 3 — era conversion. The Junagadh inscription of Rudradaman I is dated Saka 72. CE = 72 + 78 = 150 CE. A Gupta-era record of year 93 → 93 + 319 = 412 CE, which falls within Chandragupta II's reign (c. 375–415 CE) and is consistent with Fa-Hien's visit (405–411 CE).

Example 4 — crossing the BCE/CE boundary. From the Buddha's traditional *mahaparinirvana* in 483 BCE to Kanishka's accession in 127 CE: 483 + 127 − 1 = 609 years. From Mahavira's traditional death in 468 BCE to Harsha's death in 647 CE: 468 + 647 − 1 = 1,114 years — the span of the whole "historical" ancient period in most syllabi.

Example 5 — a radiocarbon date. A charcoal sample from a Mature Harappan floor retains 71% of its original ¹⁴C. t = 5730 × log(0.71)/log(0.5) = 5730 × (0.1487/0.3010) ≈ 2,831 years before the 1950 datum, i.e. about 880 BCE uncalibrated — far too late for a Mature Harappan context, so the reading signals contamination or intrusive material, not a redating of the site. This is exactly why calibrated dates and multiple samples are insisted upon.

Dynasty / phaseDates (approx.)Capital(s)Chief sources
Mature Harappan2600–1900 BCEMohenjodaro, Harappa, DholaviraExcavation, seals, weights
Early Vedic1500–1000 BCEnone (pastoral *janas*)Rigveda
Later Vedic1000–600 BCEHastinapura, KaushambiBrahmanas, Upanishads, PGW
Magadha (Haryanka–Nanda)544–321 BCERajagriha, PataliputraBuddhist/Jaina texts, coins
Maurya321–185 BCEPataliputraEdicts, Arthashastra, Megasthenes
Satavahanac. 1st c. BCE–3rd c. CEPratishthana, AmaravatiNasik, Naneghat inscriptions
Kushanac. 1st–3rd c. CEPurushapura, MathuraCoins, Gandhara art
Sangam Tamilakamc. 300 BCE–300 CEMadurai, Uraiyur, VanjiSangam poems, *Periplus*
Guptac. 319–550 CEPataliputra, UjjainPrayag prashasti, coins, Fa-Hien
Pushyabhuti (Harsha)606–647 CEThanesar, KanaujBanabhatta, Xuanzang
Mauryan stateGupta state
StructureCentralised, bureaucraticDecentralised, feudatory *samantas*
RevenueCollected by salaried officials (*samaharta*)Increasingly assigned through land grants
OfficialsAppointed, transferableOften hereditary, locally powerful
CoinagePunch-marked silver and copperGold *dinaras*, debased later
ArmyLarge standing army, state arsenalsFeudatory levies with a smaller core
Ideology*Dhamma*, paternal kingshipDivine-right titles, Vaishnava patronage

Where it is used

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