The term 'LUX' can be broken down into three separate crossword solutions: BELG (4 letters), GER (3 letters), and BEL (3 letters). BELG is the abbreviation for the country of Belgium, which is located in Western Europe and is bordered by France, Germany, and the Netherlands. GER is the abbreviation for Germany, a country located in Central Europe and is bordered by nine other countries. BEL is the abbreviation for Belarus, a country located in Eastern Europe and is bordered by Russia, Ukraine, Poland, Lithuania, and Latvia.