GUWAHATI — India’s goods exports to the US, its largest foreign market, dropped sharply by 20% in September and nearly 40% in the last four months, as Trump’s steep tariffs took effect, dataGUWAHATI — India’s goods exports to the US, its largest foreign market, dropped sharply by 20% in September and nearly 40% in the last four months, as Trump’s steep tariffs took effect, data