Chandragupa Maurya : 322 BC -299 BC

                      Chandragupta dethroned the last Nanda ruler Dhananand  and occupied Patliputra in 322 BC with the Help of Kautilya (Chankya).   

                       In 305 BC, Chandragupta Maurya defeated Seleucus  Nikator , who surrendered a vast territory including Aria (heart ), Arachosia (Kandhar), Gedrosia (Baluchistan ) and Paropanisade ( Kabul), in return for 500 elephants.

                         According to treaty between Chandragupta and Seleucus, the HIndukush become boundary between their states. 

                      Megasthenese was a Greek ambassador sent to the court Chandragupta Maurya by Seleucus Nikator. 

                      Chandragupta became a jain and went to Chandragiri Hill, Sravanbelgola (Karnataka) with Bhadrabahu ,where he died by slow starvation (Kaya – Klesha /Salekhan).

                      Under Chanragupta Maurya, for the first time ,the  whole of Northern India was united.

                      Trade flourished , agriculture was regulated , weights and measures were standardized and money came into use.  

                      Taxation, sanitation and famine relief became the concerns of the state