Sangam Age — Key Changes

Entry	Year	Description	Impact
N/A	N/A	As a historical period, the concept of 'amendments' does not directly apply. Instead, we focus on 'Key Chronological Markers' and 'Significant Historical Transitions' that define the period's evolution.	This section will highlight critical shifts or established dates that help delineate the Sangam Age and its sub-phases, rather than legal amendments.
Key Chronological Marker: Emergence of Tamil-Brahmi Inscriptions	c. 3rd Century BCE	The earliest datable Tamil-Brahmi inscriptions, found in rock shelters and on pottery, provide the first concrete epigraphic evidence for the use of a written script in Tamilakam. These inscriptions, studied extensively by Iravatham Mahadevan, often record donations by merchants and chieftains.	These inscriptions are crucial for anchoring the beginning of the historical Sangam Age, providing a non-literary source that corroborates the antiquity of the language and the presence of organized society and trade mentioned in the Sangam texts. They help bridge the gap between archaeological finds and literary accounts.
Key Chronological Marker: Peak of Indo-Roman Trade	c. 1st Century BCE - 2nd Century CE	This period marks the zenith of direct maritime trade between the Tamil kingdoms and the Roman Empire, evidenced by numerous Roman coin hoards, archaeological finds of Roman pottery (Arretine ware, amphorae) at sites like Arikamedu, and detailed accounts in classical texts like the Periplus of the Erythraean Sea.	This intense trade brought immense wealth to the Tamil kingdoms, fueled urbanisation, and significantly influenced the economy and social structure. It provides a strong external chronological marker, as Roman artifacts can be precisely dated, thereby helping to date the layers of archaeological sites and the associated Sangam literary descriptions.
Significant Historical Transition: Decline of Sangam Kingdoms and Kalabhra Interregnum	c. 3rd - 6th Century CE	Following the classical Sangam Age, the three crowned kingdoms experienced a period of decline, often attributed to the 'Kalabhra interregnum'. The Kalabhras, a mysterious group, are said to have overthrown the existing powers and ruled for several centuries, leading to a 'dark age' in Tamil history, characterized by a decline in literary output and political stability.	This transition marks the end of the classical Sangam period and sets the stage for the rise of the Pallavas and later Cholas. Understanding this 'interregnum' is crucial for comprehending the political and cultural shifts that occurred before the emergence of the medieval Tamil empires, highlighting a period of disruption and subsequent re-consolidation.