Here are the answers to your questions:
Question 5: What event ended the Hellenistic period of Egypt?
Response: the death of Cleopatra in 30 BCE
Question 6: Which of these technologies was a cultural development in ancient Egypt?
Response: hygiene products
Question 7: Sargon the Great likely established the world’s great empire. Which empire was this?
Response: Akkadian Empire
Question 8: Why was written language likely developed?
Response: It allowed trade over long distances.
Let me know if you need more information or have other questions!