Germany War II in Europe. In response to Hitler's actions, two days later, on 3 September, after a British ultimatum to Germany to cease military operations was ignored, Britain and France declared war on Germany. In the spring of 1940, Germany conquered Denmark and Norway, the Netherlands, Belgium, Luxembourg, and France forcing the French government to sign an armistice after German troops occupied most of the country. The British repelled German air attacks in the Battle of Britain in the same year. In 1941, German troops invaded Yugoslavia, Greece and the Soviet Union. By 1942, Germany and other Axis powers controlled
Interwar France as prime minister during five short intervals, directed French foreign policy, using his diplomatic skills and sense of timing to forge friendly relations with Weimar Germany as the basis of a genuine peace within the framework of the League of Nations. He realized France could neither contain the much larger Germany by itself nor secure effective support from Britain or the League. In January 1923 as a response to the failure of the German to ship enough coal as part of its reparations, France (and Belgium) occupied the industrial region of the Ruhr. Germany responded with passive resistance, including printing