Greek manufacturing shrank at the fastest pace since 2013 as uncertainty about the country’s political future mounted, threatening to undermine efforts by the European Central Bank to stimulate the euro-area economy. A Purchasing Managers’ Index for Greece slipped to a 15-month low of 48.3. The measure has been below 50, the mark that separates expansion from contraction, since September. A final reading for the 19-nation currency bloc stood at 51 in January, London-based Markit Economics said on Monday. That’s up from 50.6 in December and in line with a Jan. 23 estimate. Subdued growth and a slide in prices aggravated by a slump in the cost of oil prompted the ECB to announce a 1.1 trillion euro ($1.2 trillion) quantitative-easing program on Jan. 22. Business confidence improved last month in anticipation of the move. Three days after the QE announcement, Greek voters elected Alexis Tsipras as new […]