HOW TO GENERATE ESPIONAGE RESOURCES:
1. Define one city as an espionage city. This is done either with code of laws, or the great wall, which ever you get first. If you don't have code of laws, try to make the espionage city the same one you put the forbidden palace in - so you don't have to forgo the reduced maintenance costs.
2. Always run as many spy specialists as possible in this city, and build any espionage generating building here first. It will generate great spies only. Settle the first one and build scotland yard with the second. After that, settle each and every one in this city.
3. Be first to communism and recieve a free great spy.
4. Use the nationhood civic.
5. A few turns of 100% espionage slider targeted at one single person.
6. Use this city to output all your spies.
7. Try to run the slider at 10% espionage early.
