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Canada’s main stock index had its worst day of the year as trade uncertainty and a big drop in oil prices weighed on the energy sector.

The S&P/TSX composite index closed down 162.74 points to 16,164.61.

In New York, the Dow Jones industrial average was down 286.14 points at 25,490.47. The S&P 500 index was down 34.03 points at 2,822.24, while the Nasdaq composite was down 122.56 points at 7,628.28.

The Canadian dollar traded at an average of US74.19¢ compared with an average of US74.57¢ on Wednesday.

The July crude contract was down US$3.51 at US$57.91 per barrel and the July natural gas contract was up 3.3¢ at US$2.59 per mmBTU.

The June gold contract was up US$11.20 at US$1,285.40 an ounce and the July copper contract was up 0.25¢ at US$2.68 a pound.