By Natsuko Waki Wed Aug 20, 4:37 AM ET LONDON (Reuters) - World stocks edged higher on Wednesday after the previous day's tumble to their lowest level in almost two years attracted some buyers, while rebounding commodity prices helped resource shares.The dollar rose towards the previous day's seven-month high against a basket of six major currencies, helped by expectations that growth outside the United States is deteriorating fast.
Asian and European stocks managed to defy Tuesday's fall on Wall Street, where fears over the future of top U.S. mortgage firms Fannie Mae (FNM.N) and Freddie Mac (FRE.N) and dismal housing data dragged financial firms lower.
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