How It Evolved

Across the whole span

Four threads that run through every chapter

The chapters tell the story in order. These four views cut across it: where Buddhism's centres were, when each of its ideas and practices first appears in the record, which text belongs to which century, and what happened to women and the nuns' order. Every figure here is drawn from the evidence cited in the chapters, and links back to it.

The moving centre

Schematic — not to survey accuracy

Where the centre of gravity of Buddhism sat in each period. It leaves the Ganga plain for Gandhāra and Sri Lanka, crosses to China, and from the seventh century has several centres at once, in Tibet, Southeast Asia and Japan, while India itself loses the religion. Numbers are chapter numbers; follow them in order.

01 01 · Rājagaha — 600–400 BCE 02 02 · Sāvatthī — 480–380 BCE 03 03 · Vesālī — 400–250 BCE 04 04 · Pāṭaliputra — 268–50 BCE 05 05 · Gandhāra (Peshawar) — 100 BCE–300 CE 06 06 · Mathurā — 50 BCE–500 CE 07 07 · Chang'an — 50–850 CE 08 08 · Nālandā — 600–1300 CE 09 09 · Lhasa — 640–1950 CE 10 10 · Anurādhapura — 400–1800 CE 11 11 · Kyoto — 538–1872 CE 12 12 · Colombo — 1800–1956 CE 13 13 · Dharamsala — 1950–2026 CE
  1. 01 Rājagaha Magadha, the eastern Ganga plain 600–400 BCE
  2. 02 Sāvatthī Kosala; the Buddha's main teaching base 480–380 BCE
  3. 03 Vesālī Vajjī republic; the Second Council 400–250 BCE
  4. 04 Pāṭaliputra Mauryan capital, Magadha 268–50 BCE
  5. 05 Gandhāra (Peshawar) Kushan northwest; Sri Lanka writes down its canon in the same centuries 100 BCE–300 CE
  6. 06 Mathurā Mathurā and the northwest, where the first Mahāyāna evidence clusters 50 BCE–500 CE
  7. 07 Chang'an Chang'an and Luoyang, the Chinese capitals 50–850 CE
  8. 08 Nālandā With Vikramaśīla and the other Pāla monasteries of Bihar and Bengal 600–1300 CE
  9. 09 Lhasa Central Tibet 640–1950 CE
  10. 10 Anurādhapura Sri Lanka, hub of the Theravāda lineage 400–1800 CE
  11. 11 Kyoto Nara, Kyoto and Kamakura 538–1872 CE
  12. 12 Colombo Colonial Ceylon, centre of the revival; also Burma, Japan and India 1800–1956 CE
  13. 13 Dharamsala Tibetan exile seat; the chapter's story is global 1950–2026 CE

Each point marks the place a chapter treats as the centre of its period, not the only place Buddhism was practised; from §8 on, several centres coexist and the line between them is a reading order, not a route. Coastlines from Natural Earth (public domain).

When each idea arrives

The first datable appearance of each idea and practice, with the text or object that attests it. Read top to bottom and the series' argument is visible: almost everything people now picture as Buddhism, from Buddha images and the bodhisattva path to Zen, tantra and lay meditation, arrives centuries after the Buddha.

600 BCE 450 BCE 300 BCE 150 BCE 0 CE 250 CE 500 CE 750 CE 1000 CE 1250 CE 1500 CE 1750 CE 1900 CE 2026 CE

Density of first appearances on the compressed axis used across the Buddhism series. The clusters fall in the centuries around the turn of the era, when the Buddha image, written scripture and the Mahāyāna sūtras all appear (§5, §6).

  1. c. 5th c. BCE Renunciation as a recognised way of life Majority view Pali discourses on the śramaṇa field; DN 2 (the six rival teachers) The Buddha joined an existing world of wandering renunciants; leaving home was not his invention.
  2. c. 4th c. BCE Karma redefined as intention Majority view AN 6.63: "It is intention that I call deeds" Karma stops meaning ritual action and becomes a matter of the mind, open to anyone regardless of birth.
  3. c. 5th–4th c. BCE A fortnightly code of monastic rules (pātimokkha) Majority view Vinaya of all schools; Mahāvagga 2 (the uposatha) Every school's list agrees on the serious offences and differs mainly in minor rules, which is why schools could split over discipline without splitting over doctrine.
  4. c. 5th–4th c. BCE An order of nuns Majority view Vinayas of all schools; AN 8.51 The order is early; the eight 'heavy rules' and the prediction of decline in its founding story are probably later additions.
  5. c. 4th–3rd c. BCE Not-self (anattā) and dependent origination Majority view Core shared by the Pali Nikāyas and the Chinese Āgamas Present in every early school's canon, so probably older than the first splits; how the Buddha himself worded it is less certain.
  6. c. 4th–3rd c. BCE The four noble truths as a set formula Contested SN 56.11 and its parallels (the first sermon) Shared by all early schools, but K. R. Norman argued from its grammar that the formula in the first sermon is a later insertion.
  7. c. 300–250 BCE Monastic schools and schism Contested Sthavira–Mahāsāṃghika split; Ashoka's schism edicts The first split was probably over monastic discipline, not doctrine; its cause and date are disputed.
  8. c. 3rd–2nd c. BCE Relics enshrined in stupas Majority view DN 16 (eight shares of relics); Piprahwa vase inscription Relic worship is as old as the canon's account of the Buddha's death; Ashoka made it empire-wide.
  9. c. 249 BCE A line of past Buddhas Consensus Nigali Sagar pillar (stupa of Konākamana enlarged) An emperor is already building for an earlier Buddha, the belief the four-sights story later depends on (enlarged c. 255, recorded c. 249).
  10. c. 125–75 BCE The Buddha shown by symbols, not in human form Contested Bharhut railing reliefs, with labels Seats, trees, footprints and wheels mark his presence; whether this was a deliberate rule is argued over.
  11. c. 1st c. BCE Scripture written down Majority view Gāndhārī birch-bark scrolls; Dīpavaṃsa 20.20–21 on Sri Lanka Two or more centuries of oral transmission end; even then recitation stays central to monastic training.
  12. c. 1st c. CE Abhidharma: systematic scholastic analysis Majority view Abhidharma texts among the Gāndhārī scrolls Each school builds its own system, which is why Abhidharma, unlike the discourses, does not match across schools.
  13. c. 1st c. CE The bodhisattva path recommended to others Consensus Split collection Aṣṭasāhasrikā (radiocarbon c. 47–147 CE) The oldest Mahāyāna manuscript is nearly as old as the oldest physical Buddhist texts of any kind.
  14. c. 1st c. CE Emptiness (śūnyatā) of all things Majority view Perfection of Wisdom sūtras; later Nāgārjuna (c. 150–250) Nāgārjuna identifies emptiness with dependent origination, turning a sūtra theme into a philosophy.
  15. c. 1st–2nd c. CE A complete life of the Buddha Majority view Aśvaghoṣa, Buddhacarita The palace, the four sights and the midnight departure appear as one connected story some five centuries after the Buddha.
  16. c. 127–150 CE The Buddha in human form Consensus Kaniṣka's gold coins labelled ΒΟΔΔΟ The oldest image explicitly named as the Buddha; figures at Gandhāra and Mathurā may be somewhat earlier.
  17. c. 153 CE Amitābha and a Pure Land Majority view Govindnagar pedestal, Mathurā; Lokakṣema's 179 CE translation naming Amitābha Amitābha does not reappear in Indian inscriptions for centuries; his cult found its audience in East Asia.
  18. by 286 CE One vehicle and skilful means Consensus Lotus Sūtra (Dharmarakṣa's Chinese translation) The earlier paths are recast as provisional; all three carts in the burning house become one.
  19. c. 4th–5th c. CE Mind-only (Yogācāra) Majority view Asaṅga and Vasubandhu; Viṃśatikā Experience is explained as representation only, a second great Mahāyāna philosophy beside Madhyamaka.
  20. 421 CE Buddha-nature in every being Majority view Dharmakṣema's Mahāparinirvāṇa Sūtra; Tathāgatagarbha texts A minority teaching in India that became a basic assumption of Chinese Buddhism and of Chan.
  21. 510s–520s Monastic vegetarianism Majority view Emperor Wu of Liang's decree against meat and wine The early Vinaya allowed meat under conditions; Chinese monasticism made abstention the rule.
  22. before 674 Esoteric ritual: mantra, maṇḍala, initiation Majority view Mahāvairocana Sūtra; Sarvatathāgatatattvasaṃgraha (late 7th c.) Tantric Buddhism develops inside the great monasteries, not on their margins.
  23. 732 A Chan lineage of patriarchs Consensus Shenhui's attack on the "Northern school" at Huatai The genealogy back through Bodhidharma to the Buddha is assembled in Tang China; the 547 Bodhidharma knows nothing of it.
  24. 868 Printed scripture Consensus Dunhuang Diamond Sūtra The oldest complete dated printed book, made to spread merit by spreading the text.
  25. c. 1025–1040 The Kālacakra and its end-time war Majority view Kālacakra Tantra and the Vimalaprabhā The last major Indian tantra, with a detailed and hostile account of Islam.
  26. 1175 Exclusive nembutsu: reliance on Amida's vow Consensus Hōnen's exclusive nembutsu; Shinran after him Hōnen makes reciting Amida's name the one sufficient practice; Shinran later grounds birth in the Pure Land in faith alone, and a married clergy follows.
  27. 13th c. Recognised reincarnate lamas (tulku) Majority view Karma Pakshi recognised as Düsum Khyenpa's rebirth Succession by rebirth becomes a Tibetan institution; the Dalai Lamas follow the pattern.
  28. 1578 The title Dalai Lama Consensus Altan Khan's title for Sonam Gyatso A Mongol title, applied retroactively to two predecessors; political rule follows in 1642.
  29. 1801 "Buddhism" as a single world religion Consensus "Boudhism" in Asiatic Researches The word and the category are European; Buddhists spoke of the Buddha's teaching or dispensation.
  30. c. 1900–1923 Meditation as a practice for lay people Majority view Ledi Sayadaw's manuals in colonial Burma Insight meditation moves from the monastery to the laity, the root of the Western insight movement.
  31. 1956 Navayāna: Buddhism as social liberation Consensus Ambedkar's conversion at Nagpur and his 22 vows A Buddhism that rejects caste and reinterprets karma and rebirth, embraced by hundreds of thousands in a day.
  32. 1979 Secular mindfulness Consensus Kabat-Zinn's Stress Reduction Clinic (MBSR) Buddhist-derived attention training repackaged for medicine, detached from ethics and rebirth.

Text stratigraphy

Which text belongs to which century, and which stream it belongs to. Bars show composition or compilation ranges, not single dates: most of these texts grew over generations, and the dates of many are known only from their Chinese translations. Hover any bar for its note.

Bar opacity tracks confidence in the dating: solid for consensus, faded where contested. Two things this view makes obvious: the Pali canon was written down only in the first century BCE, centuries after the Buddha (§0); and the Mahāyāna sūtras are almost as old, as physical manuscripts, as the earliest mainstream texts (§6).

Women and the nuns’ order, tracked

Not an assertion that things got better or worse, but a cited datapoint at each stage. The nuns' order is founded with extra rules attached, disappears in Sri Lanka and Burma, survives in East Asia, and is revived, contested, from 1996.

  1. c. 5th–4th c. BCE ▲ An order of nuns founded Majority view Women could renounce, receive full ordination and run their own communities: Mahāpajāpatī's ordination is the founding story in every school's Vinaya. Vinayas of all schools; AN 8.51
  2. c. 4th–3rd c. BCE ▼ The eight 'heavy rules' and a prophecy of decline Contested The founding story makes every nun bow to every monk and blames women for shortening the teaching's life; comparison of the versions suggests these elements were added later. Cullavagga 10; Anālayo 2016
  3. c. 3rd c. BCE onward ▲ The Therīgāthā: nuns' poems of release Majority view Often called the oldest anthology of women's religious poetry in India, celebrating freedom from household drudgery, marriage and rebirth. Therīgāthā
  4. c. 250 BCE (chronicle) ◆ Saṅghamittā brings the Bodhi tree to Sri Lanka Contested The chronicles credit Ashoka's daughter with founding the nuns' order on the island; the story is tradition, not contemporary record. Dīpavaṃsa; Mahāvaṃsa
  5. c. 2nd–1st c. BCE ▲ Nuns as donors at Sanchi and Bharhut Consensus Nuns appear in large numbers among those who paid for railings, pillars and gateways, in their own names: propertied members of the saṅgha. Sanchi and Bharhut donor inscriptions
  6. c. 250–300 CE ▲ Royal women fund Nāgārjunakoṇḍa Consensus Ikṣvāku royal women, led by the king's sister Cāṃtisirī, paid for the great stupa and its monasteries. Nāgārjunakoṇḍa inscriptions
  7. 434 CE ▲ Full ordination of nuns reaches China Majority view Sri Lankan nuns led by Tessarā (Tiesaluo) join in the first dual ordination of Chinese women at Jiankang (Nanjing), traditionally regarded as the start of the lineage that survives in China, Taiwan, Korea and Vietnam. Biqiuni zhuan and later Chinese sources
  8. 584 CE ▲ Japan's first Buddhist renunciants are three women Majority view Shima, aged eleven, and two other girls take the tonsure as Zenshin-ni, Ezen-ni and Zenzō-ni, according to the Nihon shoki. In 588–590 they travelled to Baekje and returned fully ordained. Nihon shoki
  9. 741 CE ◆ A state nunnery in every province Majority view Emperor Shōmu orders official nunneries beside the provincial temples, but Japan never kept a lineage of full ordination for nuns. Kokubunji decree
  10. 993–1017 ▼ The nuns' order vanishes in Sri Lanka Majority view After the Cōḷa conquest the order disappears from the record, and when ordination is restored from Burma no nuns' lineage comes with it. Gunawardana 1979
  11. early 13th c. ◆ Shinran marries Majority view Shinran marries and has children; his wife Eshinni's letters survive. A married Pure Land clergy follows, with wives running temples. Eshinni's letters
  12. 13th c. ▼ Burmese nuns disappear from the record Majority view Pagan inscriptions record nuns as donors into the thirteenth century, then fall silent. The Theravāda world is left without fully ordained nuns. Than Tun's study of Pagan inscriptions
  13. 1872 ◆ Japan legalises clerical marriage Consensus Decree 133 ends state enforcement of celibacy for monks; temple wives become essential to temple life without formal standing. Dajōkan Decree 133
  14. 1928 ▼ Thai monks forbidden to ordain women Majority view A ruling of the Supreme Patriarch bars monks from ordaining women, and it still stands. Thai Supreme Patriarch's order
  15. 1996–98 ▲ Theravāda nuns' ordination restarted Consensus Ten Sri Lankan nuns are fully ordained at Sarnath with Korean nuns in 1996, and over a hundred women at Bodh Gaya in 1998, using the unbroken East Asian lineage. Mohr & Tsedroen 2010
  16. 2009 ◆ Ordination in Perth, and the backlash Consensus Ajahn Brahm and Bhante Sujato ordain four women; the Thai Wat Pah Pong network expels Ajahn Brahm days later. Lion's Roar report
  17. 2016 ▲ The first geshema degrees Consensus Twenty Tibetan nuns receive the highest scholastic title of Tibetan monastic education for the first time. Geshema conferral, December 2016
  18. 2022 ▲ Full ordination in Bhutan Consensus Bhutan's Je Khenpo fully ordains 144 nuns, a first in the Himalayan Vajrayāna world; the Tibetan exile hierarchy has not followed. Lion's Roar report
▲ expansion ◆ mixed ▼ contraction Rule texts describe what monks wanted, not how women lived: at Sanchi and Bharhut nuns pay for railings and gateways in their own names (§3).

What these charts are and are not

Every date here is the first datable attestation in the surviving record, which is not the same as the date an idea began. Buddhist texts were recited for centuries before they were written, and many survive only in later translations, so a first attestation is a floor, not a birth date. Where a date is genuinely contested, as with the Buddha's own dates or the four-truths formula, the confidence tag says so. The map is schematic and the time axis is compressed; both are labelled where they appear.