Chandragupta ruled over a vast empire in this context, the given heading are explained below:
(a) His main conquests: He conquered West Punjab and Sindh. Next, he attacked Magadha and uprooted the Nanda dynasty and took control of their rich and powerful kingdom, Magadha.
(b) Details of his victory over Seleucos Nicator: The territories west of the Indus were ruled by the Greek king Seleucos. He crossed the Indus in 305 BC and hoped to march victoriously through the Punjab.The Mauryan armies rushed to the north-west and inflicted a crushing defeat on the invader. Seleucos was forced to retire and had to purchase peace by ceding to Chandragupta the territories of Herat, Kandahar and Kabul (Afghanistan). Chandragupta presented him with 500 war-elephants. It is said that Chandragupta married princess Helen, the daughter of Seleucus. The Greek King maintained friendly relations with the Mauryan Court and sent Megasthenes as his ambassador who lived in Pataliputra and wrote a book on India.
