Then came World War I when warring countries ran enormous deficits that were funded by central banks’ printing and lending of money. During the war years gold was international money as international credit was lacking because trust was lacking. Then the war ended, and a new monetary order was created with gold and the winning countries’ currencies, which were tied to it, at the center of that new monetary order.
Still, in 1919-22 the printing of money and devaluations of several European currencies were required as an extension of the debt crises of those most indebted, especially those that lost World War I. As shown this led to the total extinction of the German mark and German mark debt in the 1920-23 period and big devaluations in other countries’ currencies including the winners of the war that also had debts that had to be devalued to create a new start.
With the debt, domestic political, and international geopolitical restructurings done, the 1920s was a boom period, which became a bubble that burst in 1929.
In 1930-45, 1) when the debt bubble burst that required central banks to print money and devalue it, and then 2) when the war debts had to increase to fund the war that required more printing of money and more devaluations.
At the end of the war, in 1944-45, the new monetary system that linked the dollar to gold and other currencies to the dollar was created, and the currencies and debts of Germany, Japan, Italy, and China (and a number of other countries) were quickly and totally destroyed while those of most winners of the war were slowly but still substantially depreciated. That monetary system stayed in place until the late 1960s.
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