(i) Tamil country had connections with countries overseas both in the east and west.
(ii) Roman ships used monsoon winds to cross the Western Sea or the Arabian Sea to connect Tamilagam with the Western world.
(iii) Spices including pepper, ivory, and precious stones were exported.
(iv) Metal including gold, silver and copper and precious stones were imported.
 

1. Agriculture was one of the main soures of subsistence.
2. Both wet and dry land farming were practiced.
3. In the riverine and tank-irrigated areas, paddy was cultivated.
4. Millets were cultivated in dry lands.

(i) The Tamil rulers were independent of Mauryan authority because Ashokan inscriptions found in present day Odisha, Karnataka, Telangana and Andhra Pradesh are not seen in Tamil Nadu and Kerala.
(ii) So we can conclude the status of Tamil rulers.

(i) Coins as a medium of exchange were introduced for the first time in the Sangam Age.
(ii) The coins of the Cheras, the Cholas and the Pandyas, punch-marked coins, and Roman coins form another important source of evidence from the Sangam Age.
(iii) Sometimes coins were protected as a precious wealth.

1. Excavations at Arikkamedu, Azhagankulam, Uraiyur, Kanchipuram, Kaveripoompattinam, Korkai, Vasavasamudram, Keezhadi, Kodumanal in Tamil Nadu, and Pattanam in Kerala provide the evidence we have of this period.
2. Archaeological excavations at the early historic sites are the source of evidence of the activities of the Sangam Age people.