A new pattern of world commerce is becoming clearer—as are its costs

When America took a protectionist turn two years ago, it provoked dark warnings about the miseries of the 1930s. Today those ominous predictions look misplaced. Yes, China is slowing. And, yes, Western firms exposed to China, such as Apple, have been clobbered. But in 2018 global growth was decent, unemployment fell and profits rose. In November President Donald Trump signed a trade pact with Mexico and Canada. If talks over the next month lead to a deal with Xi Jinping, relieved markets will conclude that the trade war is about political theatre and squeezing a few concessions from China, not detonating global commerce.

The golden age of globalisation, in 1990-2010, was something to behold. Commerce soared as the cost of shifting goods in ships and planes fell, phone calls got cheaper, tariffs were cut and the financial system liberalised. International activity went gangbusters, as firms set up around the world, investors roamed and consumers shopped in supermarkets with enough choice to impress Phileas Fogg.