Like many members of Japan’s middle class, Masato Y. enjoyed a level of affluence two decades ago that was the envy of the world. Masato, a small-business owner, bought a $500,000 condominium, vacationed in Hawaii and drove a late-model Mercedes.

But his living standards slowly crumbled along with Japan’s overall economy. First, he was forced to reduce trips abroad and then eliminate them. Then he traded the Mercedes for a cheaper domestic model. Last year, he sold his condo ”” for a third of what he paid for it, and for less than what he still owed on the mortgage he took out 17 years ago.

“Japan used to be so flashy and upbeat, but now everyone must live in a dark and subdued way,” said Masato, 49, who asked that his full name not be used because he still cannot repay the $110,000 that he owes on the mortgage.

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The Obama administration backed away on Friday from a showdown with Beijing over the value of China’s currency that would have caused new frictions between the world’s only superpower and its largest creditor.

The Treasury Department delayed a much-anticipated decision on whether to label China as a currency manipulator until after the U.S. congressional elections on November 2 and a Group of 20 leaders summit in South Korea on November 11.

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The dollar tumbled against most major currencies on Thursday, prompting warnings that the weakness of the world’s reserve currency could destabilise the global economy and push other countries into retaliatory devaluations to underwrite their exports.

Increasing expectations the Federal Reserve will pump more money into the US economy next month under a policy known as quantitative easing sent the dollar to new lows against the Chinese renminbi, Swiss franc and Australian dollar. It dropped to a 15-year low against the yen and an eight-month low against the euro.

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The dollar hit fresh lows against several currencies Thursday, raising pressure on global leaders to address worsening tensions among countries vying to keep their currencies weak and exports competitive.

The relentless rise of currencies from the Japanese yen to the Australian dollar is threatening to derail economic recoveries and global cooperation. In the six weeks since the Federal Reserve began discussing the prospect of further easing monetary policy, the dollar has fallen 7% against a basket of currencies.

Compounding matters are frustrations with the Chinese government’s unwillingness to allow its currency, the yuan, to significantly appreciate.

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As the U.S. prepares to embark on a new round of Federal Reserve quantitative easing, there are plenty of reasons to doubt that it is the right course for the economy and job creation.

Here’s another: The voyage might have to be aborted ”” or at least diverted ”” soon after QE2 leaves the dock because the Fed may be sailing into a political hurricane.

Even before the anticipated launch of the next round of Treasury purchases ”” it’s expected to be made official on Nov. 3 ”” the Fed’s unmistakable signals have fueled commodity price gains as the dollar has sagged….

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This is a story about how an economist and his buddies tricked the people of Brazil into saving the country from rampant inflation. They had a crazy, unlikely plan, and it worked.

Twenty years ago, Brazil’s inflation rate hit 80 percent per month. At that rate, if eggs cost $1 one day, they’ll cost $2 a month later. If it keeps up for a year, they’ll cost $1,000.

In practice, this meant stores had to change their prices every day. The guy in the grocery store would walk the aisles putting new price stickers on the food. Shoppers would run ahead of him, so they could buy their food at the previous day’s price….

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