The major equity indices closed sharply higher on Tuesday, driven by the US decision to postpone its proposed tariffs on Canada and Mexico, offering a brief respite from rising trade tensions. According to provisional data, the S&P BSE Sensex surged 1,397.07 points, or 1.81%, to finish at 78,583.81, while the Nifty 50 climbed 378.20 points, or 1.62%, ending at 23,739.25.