The Sangam literature includes the historical texts of the Chera dynasty.
Sangam literature, both akam and puram, can be subclassified into seven minor genre called tiai ()
 The Pattinappalai poem in the Ten Idylls group, for example, paints a description of the Chola capital, the king Karikal, the life in a harbor city with ships and merchandise for seafaring trade, the dance troupes, the bards and artists, the worship of the Hindu god Murugan and the monasteries of Buddhism and Jainism

