Chandragupta Maurya in the context of "History of India"

The Maurya Empire was a geographically extensive Iron Age historical power in South Asia with its power base in Magadha. Founded by Chandragupta Maurya around c. 320 BCE, it existed in loose-knit fashion until 185 BCE. The primary sources for the written records of the Mauryan times are partial records of the lost history of Megasthenes in Roman texts of several centuries later; and the Edicts of Ashoka. Archaeologically, the period of Mauryan rule in South Asia falls into the era of Northern Black Polished Ware (NBPW).

Through military conquests and diplomatic treaties, Chandragupta Maurya defeated the Nanda dynasty and extended his suzerainty as far westward as Afghanistan below the Hindu Kush and as far south as the northern Deccan; however, beyond the core Magadha area, the prevailing levels of technology and infrastructure limited how deeply his rule could penetrate society. During the rule of Chandragupta's grandson, Ashoka (ca. 268–232 BCE), the empire briefly controlled the major urban hubs and arteries of the subcontinent excepting the deep south. The Mauryan capital (what is today Patna) was located in Magadha; the other core regions were Taxila in the northwest; Ujjain in the Malwa Plateau; Kalinga on the Bay of Bengal coast; and the precious metal-rich lower Deccan Plateau. Outside the core regions, the empire's geographical extent was dependent on the loyalty of military commanders who controlled the armed cities scattered within it.

The Nanda Empire was a vast empire that governed in Magadha and Gangetic plains with an enormous geographical reach in 4th-century BCE northeastern India, with some accounts suggesting existence as far back as the 5th century BCE. The Nandas built on the successes of their Haryanka and Shaishunaga predecessors and instituted a more centralised administration. Ancient sources credit them with amassing great wealth, which was probably a result of the introduction of a new currency and taxation system.

Ancient texts also suggest that the Nandas were unpopular among their subjects because of their low-status birth, excessive taxation, and general misconduct. The last Nanda king Dhana Nanda was overthrown by Chandragupta Maurya, founder of the Maurya Empire.

The Kalinga war (ended c. 261 BCE) was fought in ancient India between the Mauryan Empire under Ashoka the Great and Kalinga, an independent feudal kingdom located on the east coast, in the present-day state of Odisha and northern parts of Andhra Pradesh. It is presumed that the battle was fought on Dhauli hills in Dhauli which is situated on the banks of Daya River. The Kalinga War was one of the largest and deadliest battles in Indian history.

This is the only major war Ashoka fought after his accession to the throne, and marked the close of the empire-building and military conquests of ancient India that began with the Mauryan Emperor Chandragupta Maurya. The war cost nearly 250,000 lives.

The ancient history of Afghanistan, also referred to as the pre-Islamic period of Afghanistan, dates back to the prehistoric era and the Helmand civilization around 3300–2350 B.C. Archaeological exploration began in Afghanistan in earnest after World War II and proceeded until the late 1970s during the Soviet–Afghan War. Archaeologists and historians suggest that humans were living in Afghanistan at least 50,000 years ago, and that farming communities of the region were among the earliest in the world. Urbanized culture has existed in the land from between 3000 and 2000 BC. Artifacts typical of the Paleolithic, Mesolithic, Neolithic, Bronze, and Iron ages have been found inside Afghanistan.

After the Indus Valley Civilisation stretched up to northeast Afghanistan, it was inhabited by the Iranic tribes and controlled by the Medes until about 500 BC when Darius the Great (Darius I) marched with his Persian army to make it part of the Achaemenid Empire. In 330 BC, Alexander the Great of Macedonia invaded the land after defeating Darius III of Persia in the Battle of Gaugamela. Much of Afghanistan became part of the Seleucid Empire followed by the Greco-Bactrian Kingdom. Seleucus I Nicator was defeated by Chandragupta Maurya and gave his daughter in a peace treaty. The land was inhabited by various tribes and ruled by many different kingdoms for the next two millennia. Before the arrival of Islam in the 7th century, there were a number of religions practiced in modern-day Afghanistan. Zoroastrianism and Ancient Iranian religions were practiced in western Afganistan (Khorasan and Herat). Hinduism and Buddhism was primarily practiced in regions of Eastern (Kabul) and South-Eastern Afganistan (Kandahar). The Kafiristan (present-day Nuristan) region, in the Hindu Kush mountain range, was not converted until the 19th century. They still follow the ancient Vedic religion (related to modern day Hinduism).

Chanakya (ISO: Cāṇakya, चाणक्य, pronunciation), according to legendary narratives preserved in various traditions dating from the 4th to 11th century CE, was a Brahmin who assisted the first Mauryan emperor Chandragupta in his rise to power and the establishment of the Maurya Empire. According to these narratives, Chanakya served as the chief adviser and prime minister to both emperors Chandragupta Maurya and his son Bindusara.

Conventionally, Chanakya was identified with Kauṭilya and synonymously Vishnugupta, the author of the ancient Indian politico-economic treatise Arthashastra. Arthashastra is now thought with high probability to have been composed by multiple authors during the early centuries of the common era—several centuries after the Mauryan period—the backdated identification with Chanakya to have served to add prestige to the work.

Kautilya's Arthashastra (Sanskrit: कौतिलियम् अर्थशास्त्रम्, IAST: Kautiliyam Arthaśāstram; transl. Kautilya's compendium on worldly affairs) is an Ancient Indian Sanskrit treatise on statecraft, politics, economic policy and military strategy. The text is likely the work of several authors over centuries, starting as a compilation of Arthashastras, texts which according to Olivelle date from the 2nd c. BCE to the 1st c. CE. These treatises were compiled and amended in a new treatise, according to McClish and Olivelle in the 1st century CE by either an anonymous author or Kautilya, though earlier and later dates have also been proposed. While often regarded as created by a single author, McClish and Olivelle argue that this compilation, possibly titled Daņdanīti, served as the basis for a major expansion and redaction in the 2nd or 3rd century CE by either Kautilya or an anonymous author, when several books, dialogical comments, and the disharmonious chapter-division were added, and a stronger Brahmanical ideology was brought in. The text thus became a proper arthashastra, and was retitled to Kautilya's Arthashastra.

Two names for the text's compilor or redactor are used in the text, Kauṭalya (Kautilya) and Vishnugupta. Chanakya (375–283 BCE), the counsellor of Chandragupta Maurya, is implied in a later interpolation, reinforced by Gupta-era and medieval traditions, which explicitly identified Kautilya with Chanakya. This identification started during the Gupta reign (c. 240–c. 579), strengthening the Gupta's ideological presentation as heirs of the Mauryas. However, the identification has been questioned by scholarship, and rejected by the main studies on the topic since 1965, because of stylistic differences within the text which point to multiple authorship, as well as historical elements which are anachronistic for the Mauryan period, but fit in the first centuries of the Common Era. The Arthashastra was influential until the 12th century, when it disappeared. It was rediscovered in 1905 by R. Shamasastry, who published it in 1909. The first English translation, also by Shamasastry, was published in 1915.

Jainism is an ancient Indian religion belonging to the Śramaṇa tradition. Jains trace their history through a lineage of twenty-four tirthankaras (ford-makers), revering Rishabhanatha as the first in the present time-cycle. While tradition considers the dharma eternal, scholarly consensus places its verifiable historical roots in the 9th–8th century BCE, with the last two tirthankaras, Parshvanatha (c. 9th-8th c. BCE) and Mahavira (c. 6th c. BCE), widely accepted as historical figures. Mahavira is viewed by scholars not as a founder, but as a reformer of the pre-existing community established by Parshvanatha.

Following Mahavira's nirvana (c. 527 BCE, the start of the Vira Nirvana Samvat era), Jainism spread across India. Early epigraphic evidence, like the Hathigumpha inscription, attests to royal patronage under figures like King Kharavela of Kalinga (c. 2nd-1st c. BCE). Traditional accounts, primarily from the 12th-century Parishishtaparvan, describe Chandragupta Maurya embracing Jainism , while Mauryan emperors like Ashoka and Samprati are mentioned in edicts and Jain texts respectively. Archaeological finds at Kankali Tila (Mathura) confirm a thriving community with temples, stupas, and a sophisticated artistic tradition under the Kushanas (c. 1st-3rd c. CE), while inscriptions and temples at Udayagiri Caves (Madhya Pradesh) and Deogarh (Uttar Pradesh) show continued prosperity under the Guptas (c. 4th-6th c. CE).