The Nanda dynasty ruled in northern part of the Indian subcontinent during the 4th century BCE, and possibly during the 5th century BCE. In 326 BC, Alexander invaded India, after crossing the river Indus he advanced towards Taxila.
The narrative texts of the Sangam literature are called Melkannakku. These are 18 major works consisting of eight anthologies and ten idylls. They are considered the works of heroic poetry in which heroes are glorified and perpetual wars and cattle raids during that time are frequently mentioned.
Viharas were for the purpose of living, Chaityas were assemblies for the purpose of discussions. Further, Chaityas were with Stupas, Viharas did not have stupas.
EXAMIANS