From VG247: “The global economy dissolved in the same moment as the global community the telephone transmission waves that had pinged between bond traders across oceans replaced by nuclear warheads. Governments and infrastructure, the things that had given the stern faces on the bank notes meaning, crumbled and rusted. The people clung to the only currency capitalism had left for them, the non-degradable bottle caps from the soda pop bottles that stuck around like cockroaches in the wasteland.”
Source: N4G PC Fallout 76 has brought radical economic change to the wasteland