France–Germany relations of the further integration of the EU. They are sometimes described as the "twin engine" or "core countries" pushing for moves. A tram straddling the Franco-German border, across the river Rhine from Strasbourg to Kehl, was inaugurated on the 28th of April 2017 symbolising the strength of relation between the two countries. Both France and Germany track their history back to the time of Charlemagne, whose vast empire included most of the area of both modern-day France and Germany – as well as the Netherlands, Belgium, Luxembourg, Switzerland, Austria, Slovenia, and northern Italy. The death of Charlemagne's son Louis the
Belgium most popular sport in both parts of Belgium; also very popular are cycling, tennis, swimming, judo and basketball. Belgians hold the most Tour de France victories of any country except France. They have also the most victories on the UCI Road World Championships. Philippe Gilbert is the 2012 world champion. Another modern well-known Belgian cyclist is Tom Boonen. With five victories in the Tour de France and numerous other cycling records, Belgian cyclist Eddy Merckx is regarded as one of the greatest cyclists of all time. Jean-Marie Pfaff, a former Belgian goalkeeper, is considered one of the greatest in the