Foreign relations of Belgium sanctioned the creation of Belgium in 1831 on the condition that the country remain strictly neutral. This policy of neutrality ended after the experience of German occupation during World War I. In the years preceding World War II, Belgium tried to return to a policy of neutrality, but once again, Germany invaded the country. In 1948, Belgium signed the Treaty of Brussels with the United Kingdom, France, the Netherlands, and Luxembourg, and one year later became one of the founding members of the Atlantic Alliance. The Belgians have been strong advocates of European integration, and most aspects of their foreign,
Law of Belgium that of the Brussels-Capital Region which is called an "ordinance" ("ordonnantie, ordonnance"). Law of Belgium The Belgian Law (; ) is very similar to that of neighbouring France, as a result of Belgium having adopted the Napoleonic code which governs French society. It also derives from the Constitution of Belgium and the European Convention on Human Rights. Due to a series of state reforms in Belgium, the country has been transformed from a unitary to a federal state. Consequently, in addition to the federal level, the communities and regions have legislative authority in certain matters. Federal legislation is called a