Gold Has been a precious resource for millions of years, and the methods of buying and trading it have changed markedly over the years. In ancient civilizations, gold was often used as a form of currency. People would trade Au coins for goods and services, which made it a central https://julie284q2g.wikiconversation.com/7110112/examining_the_ecological_and_economic_impacts_of_mining_methods_on_global_gold_supply_chain_chains