Luxembourg farms. Luxembourg has especially close trade and financial ties to Belgium and the Netherlands (see Benelux), and as a member of the EU it enjoys the advantages of the open European market. With $171 billion in May 2015, the country ranks eleventh in the world in holdings of U.S. Treasury securities. However, securities owned by non-Luxembourg residents, but held in custodial accounts in Luxembourg, are also included in this figure. Luxembourg has efficient road, rail and air transport facilities and services. The road network has been significantly modernised in recent years with of motorways connecting the capital to adjacent countries.
Luxembourg wine of produce were now consumed domestically, while the rest was exported, mostly to Belgium. The Moselle area was the only region of the country which had opted for Belgium over France as an economic partner in the referendum of 1919. During 1983-1987, 57% of produce was exported, four-fifths of this to Belgium. All official wine designations in Luxembourg are French language terms. One single appellation is used for all of Luxembourg: "Moselle Luxembourgeoise". This designation, usually referred to as the "Marque Nationale" (national seal), indicates that the wine is made entirely from Luxembourgian grapes and fulfills certain requirements. The "Marque