The Mauryan Empire (322–185 BCE) was India’s first great pan-Indian state, and the centuries after it brought the Shungas, Indo-Greeks, Shakas and Kushanas. NDA almost always asks one or two questions from this block — usually on Chandragupta, Ashoka, the Arthashastra or Kanishka. This Cavalier guide gives you every fact in plain, exam-ready language.
Why This Topic Matters for NDA
Ancient India is a high-yield zone in the NDA General Ability Test, and the Mauryan block is its single most repeated chapter. Examiners like it because the facts are clean and verifiable — dates, names, edicts and book authors.
You can expect questions such as “Who wrote the Arthashastra?”, “After which war did Ashoka adopt Buddhism?” or “Which dynasty did Kanishka belong to?”. These are direct, memory-based questions — if you know the fact, you score; if you don’t, no amount of reasoning helps.
The good news is that the syllabus here is small and stable. The same handful of names, dates and books come back year after year, so a focused revision pays off far more than it does in vaguer chapters. Read this page once carefully, then revisit only the callout boxes before the exam.
Roughly 1–3 marks every year come from Mauryan and Post-Mauryan India. Mastering this short list of facts is one of the best returns on study time in the whole History syllabus.
Rise of the Mauryan Empire
The Mauryan Empire was founded in 322 BCE by Chandragupta Maurya, who overthrew the last Nanda ruler of Magadha with the help of his teacher and minister Chanakya (also called Kautilya or Vishnugupta). The capital was Pataliputra (modern Patna).
Chandragupta defeated Seleucus Nicator, a general of Alexander, around 305 BCE. By the treaty, Seleucus gave up large eastern territories and sent his ambassador Megasthenes to the Mauryan court. Megasthenes wrote Indica, a key foreign account of Mauryan India.
Founder: Chandragupta Maurya (322 BCE) · Minister: Chanakya/Kautilya · Capital: Pataliputra · Greek ambassador: Megasthenes (book: Indica).
In later life Chandragupta is believed to have embraced Jainism under the teacher Bhadrabahu and to have died at Shravanabelagola in Karnataka through the ritual fast of Sallekhana.
The speed of this rise is what makes the Mauryas so important. In a single generation a young adventurer turned the modest kingdom of Magadha into the first empire to control almost the entire subcontinent. The combination of Chandragupta’s military energy and Chanakya’s political cunning — recorded in legend and in the play Mudrarakshasa — gave India a model of centralised power that later dynasties tried to imitate.
Bindusara, the Forgotten Maurya
Chandragupta was succeeded around 297 BCE by his son Bindusara, known to the Greeks as Amitrochates (“slayer of foes”). He extended Mauryan control into the Deccan, so that by his death the empire stretched across most of the subcontinent except the far south and Kalinga.
Bindusara is said to have favoured the Ajivika sect. Greek sources mention that he maintained friendly contact with the Hellenistic kingdoms, even requesting figs, wine and a philosopher from the Syrian king Antiochus.
Memorise the order of the three great Mauryas: Chandragupta → Bindusara → Ashoka. A common trap question swaps Bindusara’s position or links him to the Kalinga War (which was actually Ashoka’s).
Ashoka and the Kalinga War
Ashoka (reigned c. 268–232 BCE) is the most famous Mauryan ruler. Early in his reign he fought the bloody Kalinga War (261 BCE) against the region of present-day Odisha. His own 13th Rock Edict describes the enormous death and suffering it caused.
Shaken by the bloodshed, Ashoka gave up war of conquest (digvijaya) and turned to conquest by righteousness (dhammavijaya). He embraced Buddhism and devoted himself to spreading moral teaching across his empire and beyond.
The Kalinga War (261 BCE) was the turning point: after it Ashoka adopted Buddhism and the policy of Dhamma. This is the single most asked Ashoka fact in NDA.
Ashoka sent Buddhist missionaries far and wide — including his son Mahendra and daughter Sanghamitra to Sri Lanka. He also convened the Third Buddhist Council at Pataliputra under the monk Moggaliputta Tissa.
It is important to understand that Ashoka did not stop governing or defending his empire; he simply stopped expanding it through fresh wars. He kept the army, the administration and the law, but added a new moral mission on top. This blend of practical kingship and ethical idealism is why historians treat Ashoka as one of the greatest rulers in world history, not just in India.
Ashoka’s Dhamma and Edicts
Dhamma was not a new religion but a code of moral conduct: non-violence (ahimsa), respect for elders, tolerance toward all sects, kindness to servants and animals, and truthfulness. Ashoka appointed special officers called Dhamma Mahamatras to spread this code.
Ashoka was the first Indian ruler to speak directly to his people through inscriptions. His edicts were carved on rocks and pillars across the subcontinent.
- Major Rock Edicts — 14 in number, on policy and Dhamma.
- Pillar Edicts — 7 major ones, including those at Sarnath and Topra.
- Minor Rock Edicts — the Maski and Gujarra edicts actually use the personal name Ashoka.
Ashokan edicts were written mostly in the Brahmi script and Prakrit language. The script was first deciphered by James Prinsep in 1837. The Lion Capital of Sarnath is India’s national emblem.
Mauryan Administration and the Arthashastra
The Mauryas built a highly centralised administration described in the Arthashastra, a treatise on statecraft, economy and warfare written by Kautilya (Chanakya). It is our most detailed source on Mauryan governance.
The empire was divided into provinces headed by princes (Kumaras) of royal blood, with major centres at Taxila, Ujjain, Tosali and Suvarnagiri. The administration ran a large bureaucracy, a standing army and an elaborate spy system.
Source texts you must know: Arthashastra by Kautilya (administration), Indica by Megasthenes (society), and the Edicts of Ashoka (Dhamma policy).
Megasthenes described a board of officials managing the city of Pataliputra and a society he wrongly divided into seven classes. Land revenue, usually a share of produce, was the empire’s main income.
The state took an unusually active role in the economy. It controlled mines, ran armouries, regulated trade and even owned large farms worked by labourers and slaves. Officials called adhyakshas supervised everything from weaving and shipping to gambling and the army. The famous network of spies kept the king informed about ministers, rivals and ordinary subjects alike. This tight, paperwork-heavy system explains both the strength of the empire at its peak and the strain that helped break it apart once weak rulers took the throne.
Decline of the Mauryan Empire
After Ashoka’s death around 232 BCE the empire weakened rapidly. The last Mauryan ruler, Brihadratha, was assassinated in 185 BCE by his own commander-in-chief Pushyamitra Shunga, who founded the Shunga dynasty.
Historians give several reasons for the decline:
- Weak successors after Ashoka and partition of the empire.
- A huge bureaucracy and army that strained the treasury.
- Possible over-emphasis on non-violence weakening the military spirit (a debated view).
- Pressure from foreign invasions in the north-west.
Students often confuse Brihadratha (the last Maurya) with Brihadratha of other dynasties, or place the empire’s end at Ashoka’s death. The empire formally ended in 185 BCE, decades after Ashoka.
Post-Mauryan Indian Dynasties
The collapse of the Mauryas opened the Post-Mauryan age (c. 185 BCE – 300 CE), a period of regional kingdoms and foreign invasions.
Shunga and Kanva
The Shungas (185–73 BCE), founded by Pushyamitra Shunga, ruled from Pataliputra and are linked with a revival of Brahmanism and the Sanchi and Bharhut stupa railings. They were followed by the short-lived Kanva dynasty, which ruled Magadha for about forty-five years before fading away.
Satavahanas
In the Deccan rose the Satavahanas (Andhras), with Gautamiputra Satakarni as their greatest king. They issued lead and copper coins and were important patrons of trade and Buddhist architecture at Amaravati. The Satavahanas linked the trading ports of the western coast with the interior, and their long rule kept Brahmanical and Buddhist traditions flourishing side by side in the Deccan while north India was being overrun by foreign powers.
Pair each post-Mauryan dynasty with one anchor fact: Shunga → Pushyamitra, Satavahana → Gautamiputra Satakarni, Kushana → Kanishka. That trio covers most PYQs.
Foreign Dynasties: Greeks, Shakas, Parthians and Kushanas
The north-west saw waves of foreign rulers after the Mauryas.
- Indo-Greeks (Bactrian Greeks) — the first to issue gold coins in India and to put kings’ portraits on coins. The most famous was Menander (Milinda), whose dialogue with the monk Nagasena is recorded in the Milindapanho; Menander himself is said to have turned to Buddhism.
- Shakas (Scythians) — their famous ruler Rudradaman I left the Sanskrit Junagadh inscription.
- Parthians (Pahlavas) — ruled briefly in the north-west; Gondophernes is the best known.
- Kushanas — the most important, discussed below.
The Indo-Greeks introduced Hellenistic features on Indian coins, and the era of accurate dated coinage in India really begins with these foreign rulers.
Kanishka and the Kushana Age
The Kushanas, of Central Asian (Yuezhi) origin, built an empire stretching from Central Asia into north India. Their greatest king was Kanishka, who began the Shaka era in 78 CE, still used in the Indian national calendar.
Kanishka was a great patron of Mahayana Buddhism and convened the Fourth Buddhist Council in Kashmir. His age saw the flowering of the Gandhara (Greco-Roman style) and Mathura schools of art. His capital was Purushapura (modern Peshawar), with a second important centre at Mathura. Under the Kushanas, India became a hub on the Silk Road, and Roman gold flowed in through busy trade, making this one of the most prosperous and cosmopolitan ages of ancient India.
Kanishka: Kushana dynasty · started Shaka era (78 CE) · patron of Mahayana Buddhism · Fourth Buddhist Council in Kashmir · capital Purushapura (Peshawar).
If the Shaka era began in 78 CE, what Shaka year corresponds to 2023 CE?
So 2023 CE is roughly Shaka 1945 — a quick way to check any Shaka-era conversion question.
Previous-Year Style Question
NDA questions from this block are direct and fact-based. Practise spotting the single correct association.
Q. After which war did Ashoka give up the policy of physical conquest and adopt the policy of Dhamma?
(a) Battle of Hydaspes (b) Kalinga War (c) Battle of the Ten Kings (d) Battle of Kannauj
Answer: (b) Kalinga War. Fought in 261 BCE, its bloodshed led Ashoka to embrace Buddhism and the policy of dhammavijaya — conquest through righteousness rather than the sword.
When you see Ashoka in the question, the answer almost always involves Kalinga, Buddhism, Dhamma or the edicts. Lock those four words in memory.
Quick Revision
Run through these one-liners the night before the exam — they cover the bulk of what NDA asks from this topic.
- Chandragupta Maurya founded the empire in 322 BCE with Chanakya’s help; capital Pataliputra.
- Megasthenes wrote Indica; Kautilya wrote the Arthashastra.
- Bindusara ruled between Chandragupta and Ashoka.
- Ashoka fought the Kalinga War (261 BCE), adopted Buddhism and issued edicts in Brahmi/Prakrit.
- Last Maurya Brihadratha was killed by Pushyamitra Shunga in 185 BCE.
- Post-Mauryan: Shungas, Satavahanas, Indo-Greeks, Shakas, Parthians and Kushanas.
- Kanishka (Kushana) began the Shaka era in 78 CE and patronised Mahayana Buddhism.
Frequently asked questions
Who founded the Mauryan Empire and when?
Chandragupta Maurya founded it in 322 BCE after overthrowing the Nanda dynasty of Magadha, guided by his minister Chanakya (Kautilya). The capital was Pataliputra, modern Patna.
Why is the Kalinga War so important in NDA History?
The Kalinga War of 261 BCE was the turning point in Ashoka’s reign. Its bloodshed made him give up war of conquest and embrace Buddhism and the policy of Dhamma, which is the single most frequently tested Ashoka fact.
What are the main sources for the Mauryan period?
The three key sources are Kautilya’s Arthashastra on administration, Megasthenes’ Indica on society, and Ashoka’s rock and pillar edicts on his Dhamma policy.
Who was the last Mauryan ruler and how did the empire end?
The last Mauryan ruler was Brihadratha, who was assassinated in 185 BCE by his commander-in-chief Pushyamitra Shunga. This event ended the Mauryan Empire and began the Shunga dynasty.
Why is Kanishka important among the foreign dynasties?
Kanishka of the Kushana dynasty started the Shaka era in 78 CE, patronised Mahayana Buddhism, convened the Fourth Buddhist Council in Kashmir, and his age saw the Gandhara and Mathura art schools flourish.
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