Thank you, a lovely list. 7, 23, 24 were driven by the common unusual political occurrence of fair economic opportunity. These rare times where a balance of power occurs, by special circumstances, between the former autocratic rulers and everyone else. In Britain (7), domestic Royal monopolies were abolished etc creating an economic and legal environment where entrepreneurs would be rewarded. So people started invest…
(23) is because it's not independent random events. First, Plato literally taught Aristotle and was taught by Socrates. Second, Athens was the capital of an empire (okay, technically a league) so of course the best and brightest descended on Athens.
So, literally like Hollywood attracting actors or SV attracting startups, it's a self-perpetuating cycle.