Seleucus Nicator established the GrecoBactrian empire and continued the intercourse with India.
The founder Seleucus (surnamed for later generations Nicator) was a Macedonian, the son of Antiochus, one of Philip's generals.
Nicator (first reign 145-140) was a mere boy,' and the misgovernment of his Cretan supporters led to the infant son of Alexander Balas, Antiochus Vi.
EPIPHANES NICATOR (reigned 96-95), Antiochus Xi.
Among the travellers of whose information he was thus able to avail himself were Pytheas of Massilia, Patroclus, who had visited the Caspian (285-282 B.C.), Megasthenes, who visited Palibothra on the Ganges, as ambassador of Seleucus Nicator (302-291 B.C.), Timosthenus of Rhodes, the commander of the fleet of Ptolemy Philadelphus (284-246 B.C.) who wrote a treatise " On harbours," and Philo, who visited Meroe on the upper Nile.