The main Athens stock index, the Athex, falls 16% on Monday, its first day of trading after a five-week closure.
Factory activity in the world's second largest economy, China, shrank the most in two years in July as new orders fell more than expected.
UK manufacturing growth picks up in July from a 26-month low in June, but growth remains "near stagnant", a survey suggests.
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The scale of cuts being imposed on governments departments will necessitate a reinvention of some services we take for granted