Question: What ruler's death in 323 BC marks the beginning of the Hellenistic period?
Sentence: The Hellenistic period covers the period of ancient Greek (Hellenic) history and Mediterranean history between the death of Alexander the Great in 323 BC and the emergence of the Roman Empire as signified by the Battle of Actium in 31 BC and the subsequent conquest of Ptolemaic Egypt the following year.
Answer in sentence: yes