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📜 1. Ancient Bihar (Before 600 BCE)

Bihar’s name is derived from the Sanskrit word “Vihara”, meaning monastery, due to the presence of Buddhist viharas.

The region was home to early settlements like Chirand (~2500 BCE), and Mithila was ruled by King Janaka, father of Sita from the Ramayana.

👑 2. Mahajanapadas & Magadh Empire (600–321 BCE)

Bimbisara and Ajatashatru of Magadh were powerful rulers.
Rajgir and Pataliputra became important centers.
Bihar was the cradle of Buddhism and Jainism.

🏛️ 3. Mauryan Empire (321–185 BCE)

Founded by Chandragupta Maurya with capital at Pataliputra. Ashoka the Great promoted Buddhism globally.

Ashoka’s pillars and edicts still exist in Bihar.

🏯 4. Gupta Empire (320–550 CE)

Known as the Golden Age of India, with major contributions in science and literature.

Scholars like Aryabhata emerged during this era.

🕌 5. Pala Empire & Decline (750–1200 CE)

Pala kings revived Buddhism and established Nalanda and Vikramshila Universities.

Decline followed invasions by Muhammad Ghori and Bakhtiyar Khilji.

🏰 6. Medieval Period (1200–1757)

Bakhtiyar Khilji destroyed major Buddhist centers. Bihar became part of the Delhi Sultanate and later the Mughal Empire.

Sher Shah Suri, born in Sasaram, built the Grand Trunk Road.

⚔️ 7. British Colonial Period (1757–1947)

Battle of Buxar (1764) brought Bihar under British control.
Champaran Satyagraha (1917) led by Gandhi. 🕊️
Dr. Rajendra Prasad was from Bihar. 🇮🇳

📈 8. Post-Independence Bihar (1947–2000)

Bihar joined the Indian Union. Faced social and political challenges but maintained cultural strength. 💪🎭

Lalu Prasad Yadav was a dominant political figure in the 1990s. 🎤🗳️

🗺️ 9. Formation of Jharkhand (2000)

Bihar was bifurcated in 2000 to create Jharkhand for better governance of tribal and mineral-rich areas.

🏙️ 10. Modern Bihar (2000–Present)

Nitish Kumar played a vital role in governance and infrastructure development.

Education institutions like IIT Patna, NIT Patna, AIIMS Patna, and revived Nalanda University are key history-highlights.

✨ 11. Bihar’s Cultural & Religious Legacy

Birthplace of Buddhism and Jainism
Home to UNESCO site Bodh Gaya, Vaishali, and Nalanda
Temples: Vishnupad, Patan Devi, Mahabodhi
Festivals: Chhath Puja, Sonepur Mela

📈 12. Demographics and Economy

Population: Over 120 million

Major sectors: Agriculture, Education, Tourism, Transport, Handicrafts

Key Rivers: Ganga, Kosi, Sone, Gandak

Growth: Rapid development in infrastructure and digital services

🔱 Gautam Buddha (563 BCE – 483 BCE)

Janm Sthal: Lumbini (Nepal), lekin Bodhi prapti Bihar ke Bodh Gaya mein hui.

Dharm: Bauddh Dharma ke sthaapak.

Yogdaan: Gyaan prapt karne ke baad Bodh Gaya mein Mahabodhi Vriksh ke neeche baith kar moksha prapt kiya. Rajgir aur Vaishali mein prachaar kiya. Unke updesh ahimsa, madhyam marg aur karuna par aadhaarit the. Bihar ko unhone dharma ka kendr banaya.

🕊️ Bhagwan Mahavira (599 BCE – 527 BCE)

Janm Sthal: Vaishali, Bihar.

Dharm: Jain Dharma ke 24th Tirthankara.

Yogdaan: Ahimsa, satya, asteya, aparigraha aur brahmacharya ka sandesh diya. Jain dharm ke siddhant aur shiksha ko Bihar ke vaibhav se joda.

📚 Chanakya (Kautilya/Vishnugupta)

Janm Sthal: Magadh ya Nalanda ke paas (anumanit).

Yogdaan: Arthashastra ke rachayita. Chandragupta Maurya ke guru, jinhone Maurya samrajya ki sthaapna mein madad ki. Chatur aur rajneetik yojana banane mein maharath.

🛕 Aryabhata (476 CE)

Janm Sthal: Kusumpura (Pataliputra, aaj ka Patna).

Yogdaan: Pramukh ganitgyani aur khagolshastri. Zero ka upyog, pi (π) ki maap aur grahon ki gati par gahan anusandhan. Aryabhatiya granth likha.

📖 Vachaspati Mishra (9th century CE)

Janm Sthal: Mithila, Bihar.

Yogdaan: Nyaya, Vedanta aur Mimansa ke bade vidvan. Anek tatvik granthon ka rachana kiya.

🇮🇳 Dr. Rajendra Prasad (1884–1963)

Janm Sthal: Zeradei, Siwan, Bihar.

Yogdaan: Bharat ke pratham Rashtrapati. Swatantrata sangram mein Gandhi ji ke saath kaam kiya. Bharat ki Samvidhan Sabha ke adhyaksh bhi rahe.

🚩 Jayaprakash Narayan (1902–1979)

Janm Sthal: Sitab Diara, Saran, Bihar.

Yogdaan: Sampoorna kranti ke neta. Emergency (1975) ke khilaaf aandolan ka netritva kiya. Gandhiwadi soch aur loktantrik mulyaon ke pracharak.

🧠 Babu Kunwar Singh (1777–1858)

Janm Sthal: Jagdishpur, Bhojpur, Bihar.

Yogdaan: 1857 ke Swatantrata Sangram ke veer neta. Aakhri dam tak angrezon se ladai ki. Bihar ke veer putra ke roop mein jane jaate hain.

⚖️ Sri Krishna Singh (1887–1961)

Janm Sthal: Nawada, Bihar.

Yogdaan: Bihar ke pehle mukhyamantri. Zamindari pratha khatam ki, samajik sudhar laaya. Shiksha aur audyogik vikas ke kshetra mein kaam kiya.

✒️ Ramdhari Singh 'Dinkar' (1908–1974)

Janm Sthal: Simaria, Begusarai, Bihar.

Yogdaan: Rashtriya kavi, veer ras ke mahan kavi. Rachnayein: "Rashmirathi", "Parashuram ki Pratiksha". Sahitya ke madhyam se rashtravaad aur kranti ka samarthan.

🎓 Dr. Anugrah Narayan Sinha (1887–1957)

Janm Sthal: Aurangabad, Bihar.

Yogdaan: Swatantrata senani aur Bihar ke pehle Deputy CM. Shiksha, agriculture aur vikas mein mahatvapurna yogdaan.

🧘‍♂️ Nagarjuna (2nd Century CE)

Janm Sthal: Nalanda (anumanit).

Yogdaan: Madhyamaka school of Mahayana Buddhism ke vicharak. Unka darshan bauddh tatva-chintan ka aadhar bana.

📜 Vidyapati (1352–1448)

Janm Sthal: Bisfi, Madhubani, Bihar.

Yogdaan: Maithili bhasha ke mahan kavi. Unki rachnayein prem, bhakti aur rajneeti se bhari hui thi.

🏛️ Anand Kumar (Contemporary)

Janm Sthal: Patna, Bihar.

Yogdaan: Super 30 ke sthaapak. Gareeb vidyarthiyon ko IIT entrance ke liye tayar karte hain. Samajik uddeshya ke liye shiksha ka model.

🧘‍♂️ 1. Buddhism ka Janm aur Vishwa Mein Prasar

Bodh Gaya, Bihar mein Gautam Buddha ko gyaan prapt hua.

Bauddh Dharma Bharat ka pehla dharm tha jise vishwa bhar mein phelaaya gaya – Nepal, Tibet, Japan, China, Sri Lanka, Myanmar, etc.

Bihar ne ek aisa dharm diya jiska sandesh tha shanti, ahimsa aur karuna.

🕊️ 2. Jain Dharma ki Sthapna

Vaishali (Bihar) mein Bhagwan Mahavira ka janm hua, jinhone Jain dharma ka prachaar kiya.

Unki ahimsa aur satya ki shiksha ne samaj ko nayi disha di.

🏛️ 3. Sabse Pracheen Vishvavidyalaya – Nalanda University

Nalanda (5th century CE) duniya ki pehli international residential university thi.

China, Korea, Tibet, Sri Lanka se students yahaan padhne aate the.

Isne Bharat ko gyaan ka kendra banaya.

📜 4. Rajneeti aur Arthashastra ka Janm – Chanakya aur Maurya Samrajya

Bihar mein janme Chanakya (Kautilya) ne Arthashastra likha – Bharat ka pratham rajneetik/arthik manual.

Unke shishya Chandragupta Maurya ne Bharat ka pehla bada samrajya banaya.

🧮 5. Ganita aur Khagol Vigyan – Aryabhata

Bihar ke Aryabhata ne:

Zero ka gyaan diya.
Pi (π) ki accurate value nikali.
Surya aur grahon ki gati par vishesh anusandhan kiya.

Aaj ke computer aur space science mein unka yogdaan mool sthamb hai.

🏹 6. 1857 Ki Kranti Ka Veer Neta – Kunwar Singh

Bihar ke Kunwar Singh ne 80 varsh ki ayu mein 1857 ke vidroh ka netritva kiya.

Angrezon ko tagda jawab diya aur rashtrabhakti ka prateek bane.

🗳️ 7. Bharat ke Pratham Rashtrapati – Dr. Rajendra Prasad

Bihar ke Siwan se aane wale Dr. Rajendra Prasad bane Bharat ke pehle Rashtrapati.

Unka jeevan tyag, imandari aur rashtrabhakti se bhara tha.

🔥 8. Sampoorna Kranti – Jayaprakash Narayan

Emergency ke dauran JP Movement ne desh mein loktantra bachaya.

Bihar se uthi Sampoorna Kranti ki lalkar ne Indira Gandhi sarkar ki neev hila di.

✍️ 9. Hindi Sahitya ke Amar Kavi – Ramdhari Singh ‘Dinkar’

Veer Ras ke kavi Dinkar ji ne “Rashmirathi”, “Kurukshetra” jaise granth likhe.

Deshbhakti aur kranti ki bhavna bharatwasiyon mein jagayi.

🛣️ 10. Grand Trunk Road – Sher Shah Suri

Sasaram, Bihar ke Sher Shah Suri ne Delhi se Kabul tak Grand Trunk Road banayi.

Aaj bhi yeh road Bharat ki lifeline hai. Administrative reforms ka base diya jo aaj bhi prachalit hai.

🏫 11. Super 30 – Anand Kumar

Garib bachchon ko IIT mein pahuchane ka sapna pura karwane wale Anand Kumar ne desh aur videsh mein naam kamaya.

Bihar ka shiksha mein ek aadarsh model.

🧵 12. Handicrafts aur Kala

Bihar ki kala aur haat shilp duniya bhar mein mashhoor hain:

Madhubani Painting – Mithila se janmi.
Tikuli Art, Lac Bangles, Sujani embroidery – sabne Bharat ki kala ko pehchaan di.

🌾 13. Krishi aur Anaj Utpadan

Bihar Ganga nadi se sinchit hai aur Bharat ke mukhya chawal, gehu, makka utpadak rajyon mein se hai.

Litchi (Muzaffarpur) aur Makhana (Darbhanga/Mithila) ne GI tag paaya hai.

🎉 14. Cultural Festivals – Chhath Puja

Chhath Bihar ka sabse bada aur pavitra tyohaar hai jo aaj poore Bharat mein mana jaata hai.

Surya devta ki pooja aur nadi ke saath jude sanskaron ne Bihar ki sanskritik virasat ko global banaya.

🎤 15. Language and Literature

Bihar ne Bharat ko Maithili, Bhojpuri, Magahi jaise samriddh bhashaon ka varsha diya.

Bhojpuri to aaj Fiji, Mauritius, Trinidad tak boli jaati hai.

📈 16. Vikas Ke Naye Pratiman

Nitish Kumar ke netritva mein Infrastructure, law & order aur digital governance mein behtari hui.

Road, electricity, school enrollment mein sudhar. Ek udaymaan Bharat ka pratibimb ban raha hai Bihar.

📌 What Bihar Gave to India – At a Glance

Field	Contribution
Religion	Buddhism & Jainism
Politics	Chanakya, JP, Rajendra Prasad
Education	Nalanda, Aryabhata, Super 30
Literature	Dinkar, Vidyapati
Revolution	1857 – Kunwar Singh, 1975 – JP
Art	Madhubani, Tikuli, Makhana, Litchi
Social Reform	Anti-Zamindari Laws, Education Reforms
Culture	Chhath, Bhojpuri Language
Science	Zero, Astronomy by Aryabhata

🕉️ 1. Ancient Bihar: The Knowledge Hub of the World (Before 1200 CE)

Nalanda University (5th Century CE): World's first residential international university with 10,000 students and 2,000 teachers. Students from Sri Lanka, Tibet, China, Korea, and Java came here. Burnt down by Bakhtiyar Khilji in 1193 CE.
Vikramshila University (8th Century CE): Founded by Pala ruler Dharmapala, specialized in Buddhist Tantra studies, destroyed by Bakhtiyar Khilji.
Odantapuri, Telhara, Pushpagiri: Centers of research and learning along with Nalanda.
Ancient Bihar was called the “Oxford of India”.

🕌 2. Medieval Period (1200–1757): Decline of Education

After Muslim invasions, Gurukuls and Buddhist institutions were destroyed. Madrasas emerged but were limited to Arabic-Persian studies. Education in rural Bihar nearly disappeared.

🇬🇧 3. Modern Period – British Rule (1757–1947)

Colleges established: Patna College (1839), Bihar School of Engineering (now NIT Patna), BN College, Science College, TNB College (Bhagalpur).
Focused on elites; common people remained outside the system.
Women's education: Promoted by Annie Besant, Dr. Rajendra Prasad, and Anugrah Narayan Singh.
Educational institutes became centers for freedom struggle. Leaders like JP Narayan, Rajendra Prasad, and Dinkar were alumni.

🇮🇳 4. Independent India (1947–2000)

Positives: Patna University (1917), Magadh University, LNMU, Bhagalpur University established. Growth in engineering, medical, and arts colleges.
Negatives: Political interference, lack of teachers, poor infrastructure, high dropout rate, and low literacy rate, especially for rural girls.

🌱 5. Post-2000: Reforms & New Era

State Reorganization: Focused leadership post Jharkhand separation.
Major Reforms: Bicycle scheme for girls, free uniforms & books, teacher recruitment, school infrastructure improvements, and Mid-day Meal Scheme.
Key Developments: IIT Patna (2008), NIT Patna, AIIMS Patna, CNLU, NIFT Patna, Revival of Nalanda University (2014).

📊 6. Current Scenario (Post-2020s)

Achievements: Literacy rate ~71.8% (2021), increased girls’ enrollment, rise of digital learning and IT centers.
Challenges: Rural-urban disparity, poor quality in B.Ed institutions, over-dependence on coaching (Patna = Coaching Capital).

🎓 7. Educational Icons of Bihar

Personality	Contribution
Dr. Rajendra Prasad	Leader in law and social studies
Anand Kumar	Founder of Super 30, mentored underprivileged IIT aspirants
Aryabhata	Ancient mathematician, introduced zero and π (pi)

🧾 8. Education Timeline of Bihar

Period	Key Developments
Ancient Era	Nalanda, Vikramshila – oceans of knowledge
Medieval Era	Destruction, decline of education
British Rule	College establishment, elitist education
Independent India	New universities, but rural lag
Post-2000	Educational reforms, IIT/NIT/AIIMS, welfare schemes

🛕 Mahabodhi Temple, Bodh Gaya

Built by: Emperor Ashoka (~260 BCE)
Current structure: 5th–6th century CE
Significance: Site where Buddha attained enlightenment. UNESCO World Heritage Site.

🏯 Nalanda University Ruins, Nalanda

Built by: Kumaragupta I (~5th century CE)
Founded: ~427 CE
World's first residential international university, studied by Hiuen Tsang.

🏞️ Barabar Caves, Jehanabad

Built by: Ashoka (~3rd century BCE)
Oldest rock-cut caves in India
Notable Cave: Lomas Rishi Cave

🛕 Vishnupad Mandir, Gaya

Rebuilt by Ahilyabai Holkar in the 18th century
Footprint of Lord Vishnu
Main site for Shraddh rituals

🌉 Gandhi Setu, Patna

Built: 1982 by Government of India
Once the longest river bridge over Ganga

🧘 Rajgir, Nalanda

Ancient capital of Magadh
Associated with Buddha & Mahavira
Features: Vishwa Shanti Stupa, ropeway, hot springs, fort

🔥 Takht Sri Patna Sahib, Patna

Built by Maharaja Ranjit Singh (1839)
Birthplace of Guru Gobind Singh Ji
One of 5 Takhts in Sikhism

🕍 Sonepur Mela Ground, Saran

Oldest animal fair in Asia
Held since Mauryan and Mughal times

🏞️ Valmiki National Park, West Champaran

Only National Park in Bihar
Home to tigers, elephants, and biodiversity

🏰 Rohtasgarh Fort, Rohtas

Strengthened by Sher Shah Suri (16th century)
Massive hilltop fort with strategic importance

🏞️ Kakolat Waterfall, Nawada

Linked to Ramayan legends
Popular for picnics and swimming

🛕 Mundeshwari Temple, Kaimur

Possibly built ~108 CE (ASI)
Oldest functional Hindu temple

🧭 Kesaria Stupa, East Champaran

Built between 3rd BCE – 5th CE
India’s tallest Buddhist stupa (~104 ft)

📖 Chandradhari Museum, Darbhanga

Established: 1957
Art, weaponry, manuscripts, and ancient relics

🌉 JP Setu (Digha–Sonpur Bridge)

Built in 2016 by Indian Railways and Bihar Govt.
Rail-cum-road bridge connecting North Bihar

🧘‍♂️ 1. बौद्ध धर्म का जन्म और विश्व में प्रसार

बोधगया, बिहार में गौतम बुद्ध को ज्ञान प्राप्त हुआ।

बौद्ध धर्म भारत का पहला धर्म था जिसे विश्वभर में फैलाया गया – नेपाल, तिब्बत, जापान, चीन, श्रीलंका, म्यांमार आदि।

बिहार ने ऐसा धर्म दिया जिसका संदेश था शांति, अहिंसा और करुणा।

🕊️ 2. जैन धर्म की स्थापना

वैशाली (बिहार) में भगवान महावीर का जन्म हुआ, जिन्होंने जैन धर्म का प्रचार किया।

उनकी अहिंसा और सत्य की शिक्षा ने समाज को नई दिशा दी।

🏛️ 3. सबसे प्राचीन विश्वविद्यालय – नालंदा विश्वविद्यालय

नालंदा (5वीं शताब्दी ई.) दुनिया की पहली अंतरराष्ट्रीय आवासीय विश्वविद्यालय थी।

चीन, कोरिया, तिब्बत, श्रीलंका से विद्यार्थी यहाँ पढ़ने आते थे।

इसने भारत को ज्ञान का केंद्र बनाया।

📜 4. राजनीति और अर्थशास्त्र का जन्म – चाणक्य और मौर्य साम्राज्य

बिहार में जन्मे चाणक्य (कौटिल्य) ने ‘अर्थशास्त्र’ लिखा – भारत का पहला राजनीतिक/आर्थिक ग्रंथ।

उनके शिष्य चंद्रगुप्त मौर्य ने भारत का पहला बड़ा साम्राज्य बनाया।

🧮 5. गणित और खगोल विज्ञान – आर्यभट

बिहार के आर्यभट ने:

शून्य का ज्ञान दिया।
π (पाई) का सटीक मान निकाला।
सूर्य और ग्रहों की गति पर विशेष अनुसंधान किया।

आज के कंप्यूटर और अंतरिक्ष विज्ञान में उनका योगदान मूल स्तंभ है।

🏹 6. 1857 की क्रांति के वीर नेता – कुँवर सिंह

बिहार के कुँवर सिंह ने 80 वर्ष की आयु में 1857 के विद्रोह का नेतृत्व किया।

अंग्रेज़ों को कड़ा जवाब दिया और राष्ट्रभक्ति के प्रतीक बने।

🗳️ 7. भारत के प्रथम राष्ट्रपति – डॉ. राजेन्द्र प्रसाद

बिहार के सिवान से आने वाले डॉ. राजेन्द्र प्रसाद भारत के पहले राष्ट्रपति बने।

उनका जीवन त्याग, ईमानदारी और राष्ट्रभक्ति से भरा था।

🔥 8. संपूर्ण क्रांति – जयप्रकाश नारायण

आपातकाल के दौरान जेपी आंदोलन ने देश में लोकतंत्र को बचाया।

बिहार से उठी संपूर्ण क्रांति की ललकार ने इंदिरा गांधी सरकार की नींव हिला दी।

✍️ 9. हिंदी साहित्य के अमर कवि – रामधारी सिंह ‘दिनकर’

वीर रस के कवि दिनकर जी ने “रश्मिरथी”, “कुरुक्षेत्र” जैसे ग्रंथ लिखे।

देशभक्ति और क्रांति की भावना भारतीयों में जगाई।

🛣️ 10. ग्रैंड ट्रंक रोड – शेरशाह सूरी

सासाराम, बिहार के शेरशाह सूरी ने दिल्ली से काबुल तक ग्रैंड ट्रंक रोड बनवाई।

आज भी यह रोड भारत की जीवनरेखा है। उनके प्रशासनिक सुधार आज भी प्रचलित हैं।

🏫 11. सुपर 30 – आनंद कुमार

गरीब बच्चों को IIT पहुँचाने का सपना पूरा करने वाले आनंद कुमार ने देश-विदेश में नाम कमाया।

बिहार का शिक्षा में एक आदर्श मॉडल।

🧵 12. हस्तशिल्प और कला

बिहार की कला और हस्तशिल्प विश्वभर में प्रसिद्ध हैं:

मधुबनी पेंटिंग – मिथिला से उत्पन्न।
टिकुली कला, लाख की चूड़ियाँ, सुजनी कढ़ाई – इन्होंने भारतीय कला को पहचान दिलाई।

🌾 13. कृषि और अनाज उत्पादन

बिहार गंगा नदी से सिंचित है और भारत के प्रमुख चावल, गेहूं, मक्का उत्पादक राज्यों में से है।

लिची (मुज़फ्फरपुर) और मखाना (दरभंगा/मिथिला) को GI टैग प्राप्त है।

🎉 14. सांस्कृतिक त्योहार – छठ पूजा

छठ बिहार का सबसे बड़ा और पवित्र त्योहार है जो आज पूरे भारत में मनाया जाता है।

सूर्य देवता की पूजा और नदी से जुड़े संस्कारों ने बिहार की सांस्कृतिक विरासत को वैश्विक पहचान दी।

🎤 15. भाषा और साहित्य

बिहार ने भारत को मैथिली, भोजपुरी, मगही जैसी समृद्ध भाषाओं की धरोहर दी।

भोजपुरी आज भी फिजी, मॉरिशस, त्रिनिदाद तक बोली जाती है।

📈 16. विकास के नए प्रतिमान

नीतीश कुमार के नेतृत्व में आधारभूत संरचना, कानून व्यवस्था और डिजिटल प्रशासन में सुधार हुआ।

सड़क, बिजली, स्कूल नामांकन में सुधार। एक उभरते भारत का प्रतिबिंब बनता बिहार।

📌 बिहार ने भारत को क्या दिया – एक नज़र में

क्षेत्र	योगदान
धर्म	बौद्ध धर्म और जैन धर्म
राजनीति	चाणक्य, जयप्रकाश, राजेन्द्र प्रसाद
शिक्षा	नालंदा, आर्यभट, सुपर 30
साहित्य	दिनकर, विद्यापति
क्रांति	1857 – कुँवर सिंह, 1975 – जयप्रकाश
कला	मधुबनी, टिकुली, मखाना, लिची
सामाजिक सुधार	जमींदारी उन्मूलन, शिक्षा सुधार
संस्कृति	छठ, भोजपुरी भाषा
विज्ञान	शून्य, आर्यभट द्वारा खगोलशास्त्र

काल	मुख्य विकास
प्राचीन काल	नालंदा, विक्रमशिला – ज्ञान का महासागर
मध्यकाल	शिक्षा का विनाश और पतन
ब्रिटिश शासन	कॉलेजों की स्थापना, विशिष्ट वर्ग तक सीमित शिक्षा
स्वतंत्र भारत	नई विश्वविद्यालयों की स्थापना, लेकिन ग्रामीण क्षेत्र पिछड़े
2000 के बाद	शिक्षा में सुधार, IIT/NIT/AIIMS, जनकल्याण योजनाएं

व्यक्तित्व	योगदान
डॉ. राजेन्द्र प्रसाद	कानून और समाजशास्त्र के क्षेत्र में अग्रणी
आनंद कुमार	सुपर 30 के संस्थापक, वंचित बच्चों को IIT के लिए मार्गदर्शन
आर्यभट	प्राचीन गणितज्ञ, शून्य और π (पाई) का प्रतिपादन

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Bihar: A Complete Historical Journey