According to the Chera poets, Senguttuvan was their greatest king. He is also known as the Red or Good Chera. He led many successful military expeditions. He has also been mentioned in the post-Sangam text, Silappadikaram.
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.
Chandragupta Maurya was the founder of the Mauryan empire. In Greek and Latin accounts he is also mentioned as Sandrocuttos. It is believed that Chandragupta Maurya adopted Jainism and became an ascetic under the Jain saint Bhadrabahu.
The historian V. A. Smith has called Samudragupta the ‘Napoleon’ of India because of his policy of war and conquest. He started with the conquest of his immediate neighbours and then by campaigns to the east and the south.