Trade-exposed sectors of Canada’s economy have faced the brunt of the fallout from the abrupt shift in the U.S. approach to trade and frequently changing import tariffs. Photo: Joe Raedle/Getty ImagesOTTAWA—Canada’s manufacturers and wholesalers look to be steadying after taking a hit this year from trade uncertainty and higher tariffs, with early estimates of sales suggesting a tailwind for a sluggish economy entering the third quarter.An advance tally of manufacturing sales points to a solid 1.8% improvem ...