From the 6th century BCE onwards, the widespread use of iron in eastern Uttar Pradesh and western Bihar created conditions for the formation of large territorial states.
In the age of Buddha, there were 16 large states called Mahajanapadas. Among them, Magadha, Kosala, Vatsa and Avanti were considerably powerful.
This article explains the factors behind the rise of Magadha as the supreme Mahajanapada and traces the major ruling dynasties: Haryanka, Shishunaga, Nanda, and Maurya.
Table of Contents
Meaning and Background of Mahajanapadas
The word Mahajanapada refers to large territorial states that emerged in ancient India.
Their emergence was closely linked with the widespread adoption and use of iron.
Iron helped in two major ways:
- Strong weapons helped in warfare.
- Strong agricultural tools helped in clearing forests and bringing new land under cultivation.
This was especially important in eastern U.P. and western Bihar, where large territorial states began to grow from the 6th century BCE onwards.
The 16 Mahajanapadas
Ancient texts record 16 major territorial states (Mahajanapadas) during the age of Buddha.
Among these, four were especially powerful:
- Magadha
- Kosala
- Vatsa
- Avanti
Among these, Magadha emerged as the most dominant political power.
Why Magadha Became the Most Powerful Mahajanapada
Among the 16 Mahajanapadas, Magadha became the strongest. Several geographical, economic, and strategic factors contributed to Magadha’s supremacy:
1. Advantageous Geographical Position
Magadha’s geographical position was highly favourable.
The richest iron deposits were located not far from Magadha. This gave Magadha two major advantages:
- Strong weapons helped Magadha defeat enemies.
- Strong agricultural tools helped clear forests and bring virgin land into agriculture.
This made Magadha militarily stronger and economically more productive.
2. Strategic Capitals: Rajgir and Pataliputra
Magadha had two important capitals:
- Rajgir
- Pataliputra
Rajgir
Rajgir was surrounded by a group of five hills.
Because of this natural protection, it was difficult for enemies to attack the capital.
Pataliputra
Pataliputra was located at the confluence of important rivers:
- Ganga
- Gandak
- Son
Additionally, the Ghagra river joined the Ganga near Pataliputra, strengthening its water-fortress (Jaladurga) advantage.
This location made Pataliputra strategically important.
3. Fertile Middle Gangetic Plain
Magadha lay at the centre of the middle Gangetic plain.
Once the forests were cleared, the alluvial soil became very fertile. Because of heavy rainfall, the area could be made productive even without irrigation.
This gave Magadha a strong agricultural base.
4. Rise of Towns and Metal Money
Magadha also benefited from:
- Rise of towns
- Use of metal money
- Trade and commerce in north-east India
Because of trade and commerce, princes could levy tolls on the sale of commodities. This helped them accumulate wealth and maintain their army.
5. Use of Elephants in War
Magadha had a special military advantage.
It first used elephants on a large scale in wars against its neighbours.
This gave Magadha an advantage in military organisation.
6. Unorthodox Society
Magadhan society was relatively unorthodox, making it open to rapid social change and political innovation.
This is listed as one of the reasons behind the rise of Magadha.
Popular Dynasties of Magadha
The major dynasties connected with Magadha. These include:
- Haryanka Dynasty
- Nag / Shishunaga Dynasty
- Nanda Dynasty
- Mauryas
Haryanka Dynasty
Magadha came into prominence under Bimbisara, who belonged to the Haryanka dynasty.
Bimbisara was a contemporary of Buddha.
He started the policy of conquest and aggression. This expansionist policy culminated centuries later in Ashoka’s conquest of Kalinga.
Bimbisara
Bimbisara strengthened his position through marriage alliances.
His second wife Chellana was a Lichchhavi princess from Vaishali. She gave birth to Ajatashatru.
Magadha’s most serious rival during this period was Avanti, whose capital was Ujjain.
The king of Avanti, Chanda Pradyota Mahasena, fought Bimbisara. Later, the two became friends.
When King Pradyota suffered from jaundice, Bimbisara sent the royal physician Jivaka to Ujjain.
Ajatashatru
Bimbisara was succeeded by his son Ajatashatru.
Ajatashatru followed an aggressive policy of expansion.
Ajatashatru introduced novel military technologies, including the Rathamusala (a chariot equipped with a mace) and Mahashilakantaka (a stone-catapult engine).
Udayin
The successor of Ajatashatru was Udayin.
He built a fort at Patna, near the confluence of the Ganga and Son.
Udayin established the strategic capital of Pataliputra near the Ganga-Son confluence.
Nag / Shishunaga Dynasty
The Shishunaga dynasty succeeded the Haryankas.
It was founded by Shishunag, who temporarily shifted the capital to Vaishali.
Achievement of the Nag Dynasty
The greatest achievement of the Nag dynasty was the destruction of the power of Avanti, whose capital was Ujjain.
This ended the 100-year-old rivalry between Magadha and Avanti.
Kalashoka
The successor of Shishunag was Kalashoka.
He conducted the Second Buddhist Council at Vaishali.
Nanda Dynasty
The founder of the Nanda dynasty was Mahapadmananda.
The Nandas increased the power of Magadha by conquering Kalinga.
From Kalinga, they brought an image of the Jina as a victory trophy. Mahapadmananda brought a Jina idol as a trophy from his campaign in Kalinga.
Mahapadmananda claimed to be Ekarat, meaning the sole sovereign who destroyed other ruling princes.
Ghanananda / Dhanananda
The reign of Ghanananda, also called Dhanananda, was important because Alexander invaded India during his kingship.
The Nandas were extremely rich and powerful.
They maintained:
- 200,000 infantry
- 60,000 cavalry
- 3,000 to 6,000 war elephants
Because of this strength, Alexander did not advance against the Nandas.
The Mauryas
The Maurya dynasty was founded by Chandragupta Maurya.
He overthrew the unpopular last king of the Nandas, Dhanananda, and occupied his capital, Pataliputra.
Chandragupta Maurya and Seleucus Nicator
According to the treaty with Seleucus Nicator in 303 BCE, Seleucus ceded the following territories to Chandragupta:
- Arachosia / Kandahar
- Gedrosia / Baluchistan
- Paropomisadal, between Afghanistan and the Indian subcontinent
Greek ambassadors including Megasthenes and Dionysius visited the Mauryan court.
Chandragupta and Jainism
Chandragupta was the last royal person to adopt the Jain religion.
He joined Bhadrabahu’s march towards South India.
Chandragupta Maurya is identified as Sandroccotus in Greek accounts.
Bindusara
Bindusara is referred to as Amitrochates in Greek texts.
Deimachus was the ambassador of Antiochus I’s court who visited India during Bindusara’s tenure.
Bindusara joined the Ajivika sect.
Ashoka
Ashoka propagated Dhamma (Prakrit for the Sanskrit term Dharma) across his empire.
Ashoka convened the Third Buddhist Council at Pataliputra to resolve doctrinal differences within the Sangha.
Ashoka is presented as the first Indian king to speak directly to the people through inscriptions carrying royal orders.
Different Names of Ashoka in Edicts and Texts
| Name / Title | Source |
|---|---|
| Buddhashakya and Ashoka | Maski Edict |
| Dharmasoka | Sarnath inscription |
| Devanampiya | Sri Lankan Buddhist chronicles |
| Piyadassi | Dipavamsa and Mahavamsa |
Ashokan Inscriptions
Ashokan inscriptions numbered 39 and were classified into:
- Major Rock Edicts
- Minor Rock Edicts
- Separate Rock Edicts
- Major Pillar Edicts
- Minor Pillar Edicts
The inscriptions are found in:
- India
- Nepal
- Pakistan
- Afghanistan
n total, Ashokan inscriptions have been discovered at 47 sites across South Asia.
They were generally placed on ancient highways.
Language and Script of Ashokan Inscriptions
The inscriptions were mostly composed in Prakrit and written in Brahmi script in the greater part of the subcontinent.
In the north-western region, they appeared in:
- Aramaic language
- Kharoshti script
In Afghanistan, they were written in both:
- Aramaic
- Greek
The inscriptions throw light on Ashoka’s career, external and domestic policies, and the extent of his empire.
Where the Name Ashoka Appears
The name of Ashoka occurs only in copies of Minor Rock Edict I found at:
- Three places in Karnataka
- One place in Madhya Pradesh
All other inscriptions mention only Devanampriya Piyadassi, meaning dear to gods, and do not use the word Ashoka.
Ashoka After the Kalinga War
Ashoka was converted to Buddhism as a result of the Kalinga war.
He retained Kalinga after conquest and incorporated it into his empire.
There is nothing to show that he disbanded the huge army maintained from the time of Chandragupta Maurya.
Rajukas and Dhamma Mahamatras
Ashoka appointed officers called Rajukas.
They had the authority to:
- Reward people
- Punish people wherever necessary
- Administer justice in the empire
Ashoka also appointed Dhamma Mahamatras to propagate Dharma among various social groups, including women.
Ashoka’s Dhamma
Ashoka set a high ideal for himself – paternal kingship.
The objective of Ashoka’s Dhamma was to preserve the social order.
It asked people to:
- Obey their parents
- Respect Brahmanas
- Respect Buddhist monks
- Show mercy to slaves and servants
- Live and let live
- Show compassion towards animals
- Behave properly towards relatives
Ashoka disapproved of rituals, especially those observed by women.
He forbade the killing of certain birds and animals and completely prohibited the slaughter of animals in the capital.
Ashoka and Unity
In unifying the country, Ashoka respected scripts such as:
- Brahmi
- Kharoshti
- Aramaic
- Greek
He also accommodated languages such as:
- Greek
- Prakrit
- Sanskrit
Mahajanapadas and Magadha: Quick Revision Table
| Topic | Key Point |
|---|---|
| Time period | From 6th century BCE onwards |
| Main reason for large states | Widespread use of iron |
| Important region | Eastern U.P. and western Bihar |
| Number of Mahajanapadas | 16 |
| Powerful Mahajanapadas | Magadha, Kosala, Vatsa, Avanti |
| Most powerful Mahajanapada | Magadha |
| First Magadhan capital | Rajgir |
| Second Magadhan capital | Pataliputra |
| Rajgir’s advantage | Surrounded by five hills |
| Pataliputra’s advantage | Confluence of Ganga, Gandak and Son |
| Magadha’s military advantage | Use of elephants |
| First important dynasty | Haryanka |
| Haryanka ruler | Bimbisara |
| Bimbisara’s successor | Ajatashatru |
| Ajatashatru’s successor | Udayin |
| Nag dynasty founder | Shishunag |
| Nanda dynasty founder | Mahapadmananda |
| Last Nanda ruler | Dhanananda |
| Maurya dynasty founder | Chandragupta Maurya |
| Bindusara in Greek texts | Amitrochates |
| Ashoka’s policy | Dhamma |
FAQs on Jainism
What were Mahajanapadas?
Mahajanapadas were large territorial states that emerged in ancient India. There were 16 Mahajanapadas in the age of Buddha.
When did Mahajanapadas emerge?
They emerged from the 6th century BCE onwards, when the widespread use of iron in eastern U.P. and western Bihar created conditions for large territorial states.
Which were the powerful Mahajanapadas?
Magadha, Kosala, Vatsa and Avanti as considerably powerful Mahajanapadas.
Which was the most powerful Mahajanapada?
Magadha was the most powerful Mahajanapada.
Why did Magadha become powerful?
Magadha became powerful because of its iron resources, strategic capitals, fertile land, rise of towns, trade, metal money, use of elephants in war and unorthodox society.
What were the two capitals of Magadha?
The two capitals were Rajgir and Pataliputra.
Why was Rajgir strategically important?
Rajgir was surrounded by five hills, making it difficult for enemies to attack.
Why was Pataliputra strategically important?
Pataliputra was located at the confluence of the Ganga, Gandak and Son, with the Ghagra joining the Ganga not far away.
Who was Bimbisara?
Bimbisara was a ruler of the Haryanka dynasty who made Magadha prominent. He was also a contemporary of Buddha.
Who succeeded Bimbisara?
Bimbisara was succeeded by his son Ajatashatru.
Who was Udayin?
Udayin was the successor of Ajatashatru. He built a fort at Patna near the confluence of the Ganga and Son.
Who founded the Nag dynasty?
The Nag dynasty was founded by Shishunag.
Who conducted the Second Buddhist Council at Vaishali?
Kalashoka, the successor of Shishunag, conducted the Second Buddhist Council at Vaishali.
Who founded the Nanda dynasty?
The Nanda dynasty was founded by Mahapadmananda.
Who was Dhanananda?
Dhanananda, also called Ghanananda, was the last Nanda ruler. Alexander invaded India during his kingship.
Who founded the Maurya dynasty?
Chandragupta Maurya founded the Maurya dynasty after overthrowing Dhanananda.
What was Chandragupta called in Greek texts?
Chandragupta is referred to as Sandroccotus in Greek texts.
What was Bindusara called in Greek texts?
Bindusara is referred to as Amitrochates in Greek texts.
What was Ashoka’s Dhamma?
Ashoka’s Dhamma aimed to preserve social order. It emphasized respect for parents, respect for Brahmanas and Buddhist monks, mercy towards slaves and servants, compassion towards animals and proper conduct with relatives.
Which officers did Ashoka appoint for Dhamma and justice?
Ashoka appointed Dhamma Mahamatras for propagating Dharma and Rajukas for justice and administration
Last Moment Exam Cheat Sheet – The Mahajanapadas
- From the 6th century BCE, iron use helped create large territorial states.
- There were 16 Mahajanapadas in the age of Buddha.
- Magadha, Kosala, Vatsa and Avanti were powerful Mahajanapadas.
- Magadha became the most powerful Mahajanapada.
- Magadha had access to rich iron deposits.
- Iron weapons helped Magadha defeat enemies.
- Iron agricultural tools helped clear forests and expand agriculture.
- Magadha’s first capital was Rajgir.
- Magadha’s second capital was Pataliputra.
- Rajgir was surrounded by five hills.
- Pataliputra was situated at the confluence of the Ganga, Gandak and Son.
- The Ghagra joined the Ganga not far from Pataliputra.
- Magadha benefited from fertile alluvial soil and heavy rainfall.
- Magadha benefited from towns, metal money, trade and commerce.
- Magadha first used elephants on a large scale in war.
- Magadhan society was unorthodox.
- Magadha rose under Bimbisara of the Haryanka dynasty.
- Bimbisara was a contemporary of Buddha.
- Bimbisara strengthened his position through marriage alliances.
- Chellana was a Lichchhavi princess from Vaishali and mother of Ajatashatru.
- Magadha’s serious rival was Avanti, with capital at Ujjain.
- Bimbisara sent physician Jivaka to Ujjain when Pradyota had jaundice.
- Ajatashatru pursued an aggressive policy of expansion.
- Udayin built a fort at Patna near the Ganga-Son confluence.
- Shishunag founded the Nag dynasty and shifted the capital temporarily to Vaishali.
- The Nag dynasty destroyed the power of Avanti.
- Kalashoka conducted the Second Buddhist Council at Vaishali.
- Mahapadmananda founded the Nanda dynasty.
- Nandas conquered Kalinga and brought an image of the Jina.
- Mahapadmananda claimed to be Ekarat.
- Dhanananda was ruling when Alexander invaded India.
- Nandas were extremely rich and powerful.
- Chandragupta Maurya founded the Maurya dynasty.
- Chandragupta overthrew Dhanananda and occupied Pataliputra.
- Seleucus Nicator ceded territories to Chandragupta in 303 BCE.
- Megasthenes and Dionysius resided at the Mauryan court.
- Chandragupta is called Sandroccotus in Greek texts.
- Bindusara is called Amitrochates in Greek texts.
- Deimachus visited India during Bindusara’s tenure.
- Bindusara joined the Ajivika sect.
- Ashoka propagated Dhamma in India and outside.
- Ashoka organized the Fourth Buddhist Council at Pataliputra.
- Ashokan inscriptions numbered 39.
- Ashokan inscriptions appeared at 47 places and their total number was 182.
- Ashokan inscriptions were mostly in Prakrit and Brahmi.
- In the north-west, inscriptions used Aramaic and Kharoshti.
- In Afghanistan, inscriptions used Aramaic and Greek.
- Ashoka converted to Buddhism after the Kalinga war.
- Ashoka appointed Rajukas and Dhamma Mahamatras.
- Ashoka’s Dhamma focused on social order, compassion and proper conduct.