In this writing, what does "its" mean in "as the name of its origin"?
The accomplishments of the Greeks were great in the ancient world, and most probably have reached their peak in the city of Alexandria. As great as the name of its origin, Alexander Ⅲ of Macedonia (Alexander the Great), was, Alexandria dominated the eastern Mediterranean world by culture, politics, and economics for more than nine hundred years.
--
In this writing, what does "its" mean in "as the name of its origin"?