Au Has been a valuable asset for thousands of years, and the techniques of buying and exchanging it have changed significantly over the years. In early societies, Au was often used as a type of currency. People would trade Au pieces for products and offerings, which made it a key https://brandon840b6o.wikiworldstock.com/1340843/investigating_the_ecological_and_economic_impacts_of_extraction_practices_on_worldwide_au_supply_networks