was estimated about US$ 1 billion. [ 18 ] [ edit ] Chronology Luvi Kingdom (1900 BC), Hittite Empire (1900-1200 BC), Assyrian Empire (713-663 BC), Persian Empire (550-333 BC), Hellenistic (333-323 BC), Seleucid Empire (312-133 BC), Pirates of Cilicia (178-112 BC), Romans (112-95 and 55 BC - 395 AD), Armenian Kingdom under