Communication Network Quotes
The Incas had an amazing mail delivery system like the Pony Expess but with runners. They had the fastest mail delivery system in the entire world and it was then faster than many modern systems in the 21st century. So the Inca received the intelligence of what was being said within a day or two, a much better centralized intelligence system than most.
This quotation shows how large the American Post WWII German Propaganda Effort was. See {589369} for an earlier description.