The Hellenistic World (from the Greek word Hellas for Greece) is the known world after the conquests of Alexander the Great and corresponds roughly with the Hellenistic Period of ancient Greece, from 323 BCE (Alexander's death) to the annexation of Greece by Rome in 146 BCE. Although Rome's rule ended Greek independence and autonomy it did nothing to significantly change nor did it in any way halt the Hellenization of the world of the day; in fact, it encouraged it.
This is a companion discussion topic for the original content at https://www.worldhistory.org/article/94/the-hellenistic-world-the-world-of-alexander-the-g/.