Period. And the Hellenistic period is referring to the fact that all of this territory that was conquered by Alexander the Great and later gets split after the wars of the Diodeci between these Diodeci establishing these various empires, they had huge influence of Greek culture. You had ruling dynasties that were essentially Greek, whether you're in Ptolemaic Egypt, Seleucid Persia, or Antigonid Macedonia. You see the Macedonians were already a very strong Greek culture. And it's a time where you have the spread of the culture, you have kind of a bit of fulfillment of Alexander the Great's goal of creating this very, this mashup, so to speak, of the various cultures of the region, the Greco and the Persian and the Egyptian cultures. Now the Hellenistic period starts to end as each of these various empires get overthrown. The Seleucid Empire in the third century BCE, it gets more and more overtaken by the Parthian Empire.