GOLDEN AGES

So what was the key to the creative outbursts in these cities?
first of all, Athens, Florence and London had a commercial revolution thanks to the commerce and the trade. Merchants and bankers had much money so they were able to pay architects, painters and sculptors to build cathedrals, theaters, monuments...
The reasons because painters, writters, sculptors, etc decided to go to each city are these:
-Athens was the greatest trading center in the Mediterranean.
-But in Florence there was a good and favorable climate and there was social mobility were people of all social statements could find their oportunity.
-In London there was an insatiable demand of new plays