The euro weakened on Tuesday, close to the three-year low it touched on Monday, after a German survey showed a slump in investor confidence, adding to pessimism about the outlook for Europe’s largest economy.  The euro has lost 3.4% of its value against the U.S. dollar so far this year, as weak manufacturing and gross domestic product data from Germany suggest the euro zone is more vulnerable than previously thought, while the U.S. economy has proved more resilient than the rest of the world. The euro EUR=EBS traded down 0.1% at $1.0830, close to its lowest since April 2017. The mood among German investors deteriorated far more than expected in February on worries the coronavirus outbreak that started in China would dampen world trade, the ZEW […]