If you want to read more, "The Futures" was solid intro to the "how" it started: https://www.amazon.com/Futures-Speculator-Origins-Biggest-Markets/dp/046501843

If you want to read more, "The Futures" was solid intro to the "how" it started: https://www.amazon.com/Futures-Speculator-Origins-Biggest-Markets/dp/0465018432 https://www.amazon.com/Futures-Speculator-Origins-Biggest-Ma... (no affiliate link)