The nations that had prospered together 40 years earlier, trading under one universal gold standard, now had large monetary and trade barriers between them, loud populist leaders who blamed all their failures on other nations, and a rising tide of hateful nationalism that was soon to fulfill Otto Mallery's prophecy: “If soldiers are not to cross international boundaries, goods must do so. Unless the Shackles can be dropped from trade, bombs will be dropped from the sky.”
