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
Military Administration in Belgium and Northern France Military Administration in Belgium and Northern France The Military Administration in Belgium and Northern France () was an interim occupation authority established during the Second World War by Nazi Germany that included present-day Belgium and the French departments of Nord and Pas-de-Calais. The administration was also responsible for governing the "zone interdite", a narrow strip of territory running along the French northern and eastern borders. It remained in existence until July 1944. Plans to transfer Belgium from the military administration to a civilian administration were promoted by the SS, and Hitler had been ready to do so until Autumn 1942,