German invasion of Poland
Napoleon's conquests in Europe brought Britain, as well as Austria, Russia and many other countries, into war with France.
Germans alliance with Britain
In 1904, when Fredereck Benson brought the sport to the country from its neighboring country of Spain.
Neither country wanted to be conquered by Germany.
The Fall of France in 1940 meant that Germany had access to the Atlantic Ocean, circumventing the British blockade of Germany.
Russia jumped in on Serbia's side, dragging in her ally, France, in the process. This triggered the German attack on France, which the Germans made by way of Belgium. Going through Belgium brought Great Britain in. So Russia, France, Belgium and Great Britain (and all her Commonwealth states and colonies).
The horrible disease, plague, was brought in Britain.
Britain and France apex:)
Austria wanted to crush Serbia and they brought France Germany Russia and Britain into the war
Britain, France and Russia were in the Triple entente.
Wrestling is the least played sport in France.