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
Oldest synagogues in the United Kingdom Oldest synagogues in the United Kingdom The designation oldest synagogue in the United Kingdom requires careful definition. A number of synagogues that predate the expulsion of the Jews from England have been discovered by archaeologists or by historians in buildings that have been in use for other purposes for many centuries. A second set of synagogues post-dates the legal return of Jews to England in the seventeenth century. Some synagogues have been destroyed or demolished and rebuilt on the same site, so that, while the site or congregation may be very old, the building may be modern. Still other old