Book section: For at least 5000 years, people have created, modified and used financial instruments, markets and intermediaries. Whether it was the use of money and debt to facilitate specialization and investment in Babylonia in 3000 BC (Van de Mieroop, 2005), the creation of market-traded securities in ancient Rome to mobilize capital for immense minig projets (Rostovotzeff, 1957; Malmendier, 2005).