Fun fact: After the Greeks beat the Persians, they created a union of state-cities, called the Delian league [1] to protect against future attacks. It was named

Fun fact: After the Greeks beat the Persians, they created a union of state-cities, called the Delian league [1] to protect against future attacks. It was named so because the gatherings were happing at Delos, a Greek island. Many state-cities had contributed to a fund that was to be used for guarding against future Persian attacks. Shortly after the league's creation, Pericles moved its base to Athens, and the story goes that part of that fund (the equivalent of today's $4 billion) was used to build Parthenon. [1] https://en.m.wikipedia.org/wiki/Delian_League https://en.m.wikipedia.org/wiki/Delian_League