Out of Gaps In Treaties, First Salvos Of Trade War - washingtonpost.com

In 1930, Congress fired the first shot in a protectionist battle that prolonged and deepened the Great Depression. After passing a bill aimed at saving American jobs by effectively barring 20,000 imported goods, including French dresses and Argentine butter, other nations retaliated by raising their own barriers on U.S. products, effectively bringing global commerce to a halt.

In the aftermath, organizations like the World Trade Organization sought to ensure that never happened again. Nations agreed to put on economic straitjackets permitting them to raise tariffs within hard-fought limits. That is likely to help prevent a repeat of the devastating and overt trade wars seen during the Great Depression, since it is now far harder for nations to increase tariffs on a wide array of imports at once.

Out of Gaps In Treaties, First Salvos Of Trade War - washingtonpost.com