Investors, policy makers and countries face a messy breakup with vast financial, economic and political implications. RELATED ARTICLE Markets Shudder U.S. S&P 500 INDEX -3.59%

Global markets rose earlier this week when the polls edged toward remaining. But the voters’ choice to leave has severely undermined the confidence of investors.

The pound and the euro dropped amid concerns that the region’s already fragile economies could be further undermined by the ‘Brexit.’

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