What are the largest global trading economies? The USA's share of global trade? 9%
As the largest importer, those tariffs are gonna hurt people in the USA.
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In 2019, the top-five largest trading economies in terms of share of global trade were the European Union, the United States, China, Japan and the United Kingdom (UK).
Considering EU member states individually, China was the largest exporter, while the United States was the largest importer. In goods trade, the United States was the largest importer and second-largest exporter (behind China). In services trade, the United States was both the largest importer and exporter.
The U.S. share of global goods trade has fallen over the past several decades—from 15% in 1970 to 9% in 2019—largely due to the rapid increase of global trade, especially among developing countries and emerging markets.