The euro dropped lower on Friday in the wake of the European Central Bank announcing fresh stimulus measures, hitting 11-year lows against the dollar.
Forces including a strengthening United States economy will push the euro to parity with the dollar by the end of next year as euro zone countries look to break through a period of sluggish growth, an economist said on Friday.
"The problems in Europe are not going away, just in the near-term. You have the U.S. doing better, and Europe continuously being behind. That will continue to put downward pressure on the euro for quite some time," Torsten Slok, chief international economist at Deutsche Bank, told CNBC's "Closing Bell."