Gold Has been a precious resource for millions of years, and the methods of buying and trading it have changed significantly over time. In ancient civilizations, gold was often used as a type of money. People would trade gold coins for goods and services, which made it a key component https://pamela849j0g.national-wiki.com/1325127/examining_the_ecological_and_economic_impacts_of_mining_methods_on_worldwide_au_supply_chains