The eurozone economy regained some lost momentum at the start of 2019, offering fresh evidence of surprisingly resilient global growth amid lingering uncertainties about trade with the U.S. and the strength of demand for its exports from China. At the turn of the year, the global economy appeared to be heading for a slowdown, with the International Monetary Fund and other bodies lowering their projections while asset markets sold off on worries that a broad-based downturn was a prospect. …