Rome:
started with silver coins at 95% purity. three centuries later? less than 5%. Gold doubled. Soldiers demanded gold pay. Inflation skyrocketed 1,000%. Trade and trust crashed. Empire fractured.
Spain:
1500s superpower thanks to silver influx. Printed wealth without production. Prices quadrupled. Middle class destroyed. Four defaults in 50 years. Gold & silver doubled. Empire bankrupt.