With emerging markets funds  delivering returns of even more than 30% a year over the past few years, they have become more mainstream, the Washington Post reports. And as a result, it has become more difficult for managers of such funds to deliver strong returns.

Thus, rather than concentrate on the tried-and-true emerging markets regions, such as India and China, some companies, such as T. Rowe Price and Franklin Templeton, are offering funds that invest in places as exotic as Latvia, Bangladesh, Namibia and the Ivory Coast.

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