TORONTO — Strength in the energy and technology sectors helped Canada’s main stock index rise more than 250 points in late-morning trading, while U.S. stock markets also climbed higher. The S&P/TSX composite index was up 274.78 points at 24,980.85. In New York, the Dow Jones industrial average was up 236.91 points at 41,818.22. The S&P […]