Reserve currency before the beginning of the worldwide credit crunch related recession and Eurozone crisis, which harmed the euro and slowed its adoption. Since 2009, the reserve currency use of the euro has continued to drop, down to 23.9 percent in 2013. The Dutch guilder was the "de facto" reserve currency in Europe in 17th and 18th centuries. The United Kingdom's pound sterling was the primary reserve currency of much of the world in the 19th century and first half of the 20th century. The emergence of the USA as an economic superpower, and the establishment of the U.S. Federal Reserve System
Charles S. Dewey Charles S. Dewey Charles Schuveldt Dewey (November 10, 1880 – December 27, 1980) was a banker and politician from Illinois. The cousin of George Dewey, Charles S. Dewey entered the real estate business in Chicago, Illinois in 1905. He served in the United States Navy during World War I. In 1920, he began a career in banking as Vice President of the Northern Trust Company of Chicago. Four years later, Andrew W. Mellon appointed Dewey an Assistant Secretary of the Treasury. A committee led by Dewey standardized the portraits and dimensions of American currency; the dimensions are still in use