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
France–Germany relations By the war's end, the French army occupied south-west Germany and a part of Austria. Marshal Petain, who ruled France under German supervision, 1940-44, adopted the ideology of National Revolution which was originally based on ideas which had been discussed for years. When the Franco-German reconciliation committee "Comité France-Allemagne" ("French-German Friendship Committee") founded in 1935 in Paris it was an important element for Germany to get closer to France. It adopted Pro-European, Pro-German, anti British, anti liberal political and economic views. Key members of the Committee became the key leaders of the French collaborators with Nazis after 1940. When Marshal