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
1920 in Germany treaty obligations regarding disarmament and reparation. Thus, in the three weeks following the Spa conference over 4,000 heavy guns and field guns were destroyed; and measures were taken to obtain the very large number of arms which existed all over the country in the hands of the civilian population. Great numbers of livestock were also handed over to the Allies. Thus France received from Germany (up to November 30) over 30,000 horses, over 65,000 cattle, and over 100,000 sheep. Belgium received, up to the same date, 6,000 horses, 67,000 cattle, and 35,000 sheep. The financial position of the country remained