APAn index of non-US stocks saw their steepest decline since August this week. The broad sell-off came after Trump's election win stoked fears of coming trade wars. Analysts say his proposals could be particularly detrimental for Europe and China.Donald Trump's win has sent US stocks on a tear, but for equities in the rest of the world, it's sparked a sell-off on fears of a widespread economic downturn due to tariff risks.An MSCI index of large and mid-sized stocks outside the US tumbled 1.6% on Tuesday, its steepest daily drop since August.The Stoxx Europe 600 Index, meanwhile, lost 2.1% for its worst one-day drop in three months, while an index of emerging market stocks dropped 2%.