Falling oil prices, China growth fear grip markets

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Fear and then relief gripped the markets this week, testing investors' nerves. The problems were not particularly new - concerns about a China-led global slowdown, collapsing oil prices and the end of the US Federal Reserve support had been rattling traders for months, leading to a plunge in equities back in August. The same issues reached a crescendo again by Wednesday before a rebound on central-bank optimism. A look at the week that was wild on the stock markets: