South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas
A possible reason was the attacks on them by crusaders and mongols around the 11th and 12th centuries. Another reason could have been the Arab rulers removing taxes from non Muslims and doing other things that hurt there income.
Answer:
I'm not sure about the Hellenistic society, but the Greek Civilization contributed a lot to our world today. Many philosophers like Plato and Socrates still have sayings that are used today. Architeture played a huge role. I'm fairly certain the Greeks named a ton of the constellations.
Explanation:
I hope this helps a little bit. You can always research more.