Would love potash, the most boring substance, to be the turning point in this U.S.-initiated trade war. Canada supplies 80% of it to the United States. A 25% tariff will ruin American farmers. Canada could also choose to block its export. It’s practically the spice melange…
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More on potash: https://natural-resources.canada.ca/minerals-mining/mining-data-statistics-analysis/minerals-metals-facts/potash-facts