France was one of the Allied Powers in World War II, but was conquered by Nazi Germany in 1940. The Third Republic was dismantled, and most of the country was controlled directly by Germany while the south was controlled until 1942 by the collaborationist Vichy government. Living conditions were harsh as Germany drained away food and manpower, and many Jewswere killed. Charles de Gaulle led the Free France movement that one-by-one took over the colonial empire, and coordinated the wartime Resistance. Following liberation in summer 1944, a Fourth Republic was established. France slowly recovered economically, but did enjoy a Baby boom that reversed its very low fertility rate. Long wars in Indochina and Algeria drained French resources and ended in political defeat. In the wake of the Algerian Crisis of 1958, Charles de Gaulle set up the French Fifth Republic. Into the 1960s decolonization saw most of the French colonial empire become independent, while smaller parts were incorporated into the French state as overseas departments and collectivities. Since World War II France has been a permanent member in the UN Security Council and NATO. It played a central role in the unification process after 1945 that led to the European Union. Despite slow economic growth in recent years and issues with Muslim minorities, it remains a strong economic, cultural, military and political factor in the 21st century.