Seleucus IV Philopator, ruler of the Hellenistic Seleucid Empire, reigned from 187 BC to 175 BC over a realm consisting of Syria, Mesopotamia, Babylonia and Nearer Iran.
Coin of Seleucus IV Philopator, stamp Greek: (Β)ΑΣΙΛΕΩΣ (ΣΕ)ΛΕΥΚΟΥ
The Seleucid Empire was a Greek power in West Asia during the Hellenistic period. It was founded in 312 BC by the Macedonian general Seleucus I Nicator, following the division of the Macedonian Empire founded by Alexander the Great, and ruled by the Seleucid dynasty until its annexation by the Roman Republic under Pompey in 63 BC.
Seleucid Empire
"Chandra Gupta Maurya entertains his bride from Babylon": a conjectural interpretation of the "marriage agreement" between the Seleucids and Chandragupta Maurya, related by Appian
Coin of Seleucus I Nicator
In Bactria, the satrap Diodotus asserted independence to form the Greco-Bactrian kingdom c. 245 BC.