Pataliputra in the context of "Son River"

Ashoka, also known as Asoka or Aśoka (/əˈʃoʊkə/ ə-SHOH-kə; Sanskrit: [ɐˈɕoːkɐ], IAST: Aśoka; c. 304 – 232 BCE), popularly known as Ashoka the Great, was Emperor of Magadha from c. 268 BCE until his death, and the third ruler from the Mauryan dynasty. His empire covered a large part of the Indian subcontinent, stretching from present-day Afghanistan in the west to present-day Bangladesh in the east, with its capital at Pataliputra. A patron of Buddhism, he is credited with an important role in the spread of Buddhism across ancient Asia.

The Edicts of Ashoka state that during his eighth regnal year (c. 260 BCE), he conquered Kalinga after a brutal war. Ashoka subsequently devoted himself to the propagation of "dhamma" or righteous conduct, the major theme of the edicts. Ashoka's edicts suggest that a few years after the Kalinga War, he was gradually drawn towards Buddhism. The Buddhist legends credit Ashoka with establishing a large number of stupas, patronising the Third Buddhist council, supporting Buddhist missionaries, and making generous donations to the sangha.

The Pāla Empire was the empire ruled by the Pala ("protector" in Prakrit & Sanskrit) dynasty, a medieval Indian dynasty which ruled the kingdom of Gauda. The empire was founded with the election of Gopāla by the chiefs of Gauda in late eighth century CE. The Pala stronghold was located in Bengal and eastern Bihar, which included the major cities of Gauḍa, Vikramapura, Pāṭaliputra, Monghyr, Somapura, Ramavati (Varendra), Tāmralipta and Jagaddala.

The Pālas were astute diplomats and military conquerors. Their army was noted for its vast war elephant corps. Their navy performed both mercantile and defensive roles in the Bay of Bengal. At its zenith under emperors Dharmapala and Devapala in the early ninth century, the Pala empire was the dominant power in the northern Indian subcontinent, with its territory stretching across the Gangetic plain to include some parts of northeastern India, Nepal and Bangladesh. Dharmapala also exerted a strong cultural influence through the Buddhist scholar Atis Dipankar in Tibet, as well as in Southeast Asia. Pala control of North India was ultimately ephemeral, as they struggled with the Gurjara-Pratiharas and the Rashtrakutas for the control of Kannauj and were defeated. After a short-lived decline, Emperor Mahipala I defended imperial bastions in Bengal and Bihar against South Indian Chola invasions. Emperor Ramapala was the last strong Pala ruler, who gained control of Kamarupa and Kalinga. The empire was considerably weakened with many areas engulfed and their heavy dependence on Samantas being exposed through 11th century rebellion. It finally led to the rise of resurgent Hindu Senas as sovereign power in the 12th century and final expulsion of the Palas from Bengal by their hands marking the end of the last major Buddhist imperial power in the subcontinent.

Vātsyāyana (Sanskrit : वात्स्यायन) was an ancient Indian philosopher, known for authoring the Kama Sutra. He lived in India during the second or third century CE, probably in Pataliputra (modern day Patna in Bihar).

He is not to be confused with Pakṣilasvāmin Vātsyāyana, the author of Nyāya Sutra Bhāshya, the first preserved commentary on Gotama's Nyāya Sutras. His name is sometimes erroneously confused with Mallanaga, the seer of the Asuras, to whom the origin of erotic science is attributed.

Patna (Hindi: Paṭanā, pronounced [ˈpəʈnaː] ), historically known as Pāṭaliputra, is the capital and largest city of the Indian state of Bihar. According to the United Nations, as of 2018, Patna had a population of 2.35 million, making it the 19th largest city in India. Covering 250 square kilometres (97 sq mi) and over 2.5 million people, its urban agglomeration is the 18th largest in India. Patna also serves as the seat of Patna High Court. The Buddhist, Hindu and Jain pilgrimage centres of Vaishali, Rajgir, Nalanda, Bodh Gaya and Pawapuri are nearby and Patna City is a sacred city for Sikhs as the tenth Sikh Guru, Guru Gobind Singh was born here. The modern city of Patna is mainly on the southern bank of the river Ganges. The city also straddles the rivers Son, Gandak and Punpun. The city is approximately 35 kilometres (22 mi) in length and 16 to 18 kilometres (9.9 to 11.2 mi) wide.

One of the oldest continuously inhabited places in the world, Patna was founded in 490 BCE by the king of Magadha. Ancient Patna, known as Pataliputra, was the capital of the Magadha Empire throughout the Haryanka, Nanda, Mauryan, Shunga, Gupta, and Pala dynasties. Pataliputra was a seat of learning and fine arts. It was home to many astronomers and scholars including Aryabhata, Vātsyāyana and Chanakya. During the Maurya period (around 300 BCE) its population was about 400,000. Patna served as the seat of power, and political and cultural centre of the Indian subcontinent during the Maurya and Gupta empires. With the fall of the Gupta Empire, Patna lost its glory. The British revived it again in the 17th century as a centre of international trade. Following the partition of Bengal presidency in 1912, Patna became the capital of Bihar and Orissa Province.

The Yuezhi were an ancient people first described in Chinese histories as nomadic pastoralists living in an arid grassland area in the western part of the modern Chinese province of Gansu, during the 1st millennium BC. After a major defeat at the hands of the Xiongnu in 176 BC, the Yuezhi split into two groups migrating in different directions: the Greater Yuezhi and Lesser Yuezhi. This started a complex domino effect that radiated in all directions and, in the process, set the course of history for much of Asia for centuries to come.

The Greater Yuezhi initially migrated northwest into the Ili Valley (on the modern borders of China and Kazakhstan), where they reportedly displaced elements of the Sakas. They were driven from the Ili Valley by the Wusun and migrated southward to Sogdia and later settled in Bactria. The Greater Yuezhi have consequently often been identified with peoples mentioned in classical European sources as having overrun the Greco-Bactrian Kingdom, like the Tókharoi and Asii. During the 1st century BC, one of the five major Greater Yuezhi tribes in Bactria, the Kushanas, began to subsume the other tribes and neighbouring peoples. The subsequent Kushan Empire, at its peak in the 3rd century AD, stretched from Turfan in the Tarim Basin in the north to Pataliputra on the Gangetic plain of India in the south. The Kushanas played an important role in the development of trade on the Silk Road and the introduction of Buddhism to China.

Kanishka I, also known as Kanishka the Great, was an emperor of the Kushan dynasty, under whose reign (c. 127–150 CE) the empire reached its zenith. He is famous for his military, political, and spiritual achievements. A descendant of Kujula Kadphises, founder of the Kushan empire, Kanishka came to rule an empire extending from Central Asia and Gandhara to Pataliputra on the Gangetic plain. The main capital of his empire was located at Puruṣapura (Peshawar) in Gandhara, with another major capital at Mathura. Coins of Kanishka were found in Tripuri (present-day Jabalpur).

Although he never converted to the religion, his conquests and patronage of Buddhism played an important role in the development of the Silk Road, and in the transmission of Mahayana Buddhism from Gandhara across the Karakoram range to China. Around 127 CE, he replaced Greek with Bactrian as the official language of administration in the empire.

The 5th century BC started the first day of 500 BC and ended the last day of 401 BC.

This century saw the establishment of Pataliputra as a capital of the Magadha Empire. This city would later become the ruling capital of different Indian kingdoms for about a thousand years. This period saw the rise of two great philosophical schools of the east, Jainism and Buddhism. This period saw Mahavira and Buddha spreading their respective teachings in the northern plains of India. This essentially changed the socio-cultural and political dynamics of the region of South Asia. Buddhism would later go on to become one of the major world religions.

The Haryanka dynasty was the ruling dynasty of Magadha, according to the Buddhist text Mahavamsa between 544 BC and 413 BC though some scholars favour a later chronology (5th century BCE to first half of 4th century BCE). Initially, the capital was Rajagriha. Later, it was shifted to Pataliputra, near present-day Patna in India during the reign of Udayin. Bimbisara is considered to be the founder of the dynasty.

According to the Mahavamsa, Bimbisara was appointed king by his father, Bhattiya, at the age of fifteen. This dynasty was succeeded by the Shaishunaga dynasty.