The Mauryan Empire's decline after Ashoka (c. 232 BCE) resulted from imperial overextension, administrative difficulties in controlling such a vast territory, and succession disputes.

Ashoka's successors lacked his capabilities.

This led to the rise of regional powers like the Sungas, Anuradhapura kingdom in Sri Lanka, and the Indo-Greeks, fragmenting centralized authority.

Mahavira (c. 540-468 BCE) and Buddha (c. 563-483 BCE) were contemporaries living during the 6th century BCE.

Both founded major religious movements that challenged Vedic Brahminism.

Both attained spiritual enlightenment and established monastic orders that continue to exist.

The Third Buddhist Council, convened by Ashoka at Pataliputra (c. 250 BCE), standardized the Buddhist canon and sent missionaries to spread Buddhism.

The Tipitaka (Three Baskets) comprising Vinaya, Suttas, and Abhidhamma were formally compiled during this council.

This was crucial for establishing canonical orthodoxy.

The Sangam Age (c. 300 BCE - 300 CE) was characterized by the flourishing of Tamil language and literature.

The three kingdoms—Chola, Chera, and Pandya—were independent and often competitive.

Tamil was used in administration, literature (Sangam texts), and daily life.

While there was trade with Rome, the kingdoms followed Hinduism, Buddhism, and Jainism concurrently.

The Gupta Empire (c. 320-550 CE) witnessed remarkable developments in mathematics, with scholars like Aryabhata and Brahmagupta formulating concepts of zero, the decimal system, and trigonometry.

This period also saw flourishing in Sanskrit literature, astronomy, medicine, and architecture.

Rock Edict VI emphasizes Ashoka's administrative accessibility to his subjects, stating that he is always available to hear their grievances and concerns regardless of their status.

It reflects his commitment to the welfare principle (praja-sukhe) inherent in his Dhamma policy.

After the bloody Kalinga War (261 BCE), Ashoka embraced Buddhism and adopted the policy of Dhamma (righteousness).

Rather than renouncing administration, he integrated ethical principles into governance, promoting non-violence, tolerance, and moral conduct.

This represented 'conquest through Dhamma' as opposed to military conquest, as mentioned in his edicts.

The Mahajanapadas (16 major kingdoms) emerged during the Later Vedic Period (c. 1000-600 BCE).

Magadha became the dominant power under the Haryanka and Nanda dynasties.

This period witnessed the flourishing of Buddhism and Jainism (6th century BCE).

However, most were not maritime republics—they were primarily territorial kingdoms with some republican (Sangha) forms of government.

In Rigvedic literature, Dasas and Dasyus refer to the indigenous or non-Aryan populations that the Aryans encountered and often came into conflict with.

The Rigveda frequently mentions battles between Aryans and these groups, particularly in the context of cattle raids and territorial expansion.

Mohenjo-daro is renowned for its advanced urban planning features including a sophisticated drainage system with underground sewers, standardized brick sizes, and uniform weights and measures.

These indicate a high degree of civic organization in the Indus Valley Civilization (c. 2600-1900 BCE).