Luxembourg an independent state under the personal possession of William I of the Netherlands with a Prussian garrison to guard the city against another invasion from France. In 1839, following the turmoil of the Belgian Revolution, the purely Oil-speaking part of Luxembourg was ceded to Belgium and the Luxembourgish-speaking part (except the Arelerland, the area around Arlon) became what is the present state of Luxembourg. Luxembourg is a founding member of the European Union, OECD, United Nations, NATO, and Benelux. The city of Luxembourg, which is the country's capital and largest city, is the seat of several institutions and agencies of
Belgium–Netherlands relations in the Netherlands, while there are around 111,000 Dutch nationals in Belgium. Thanks to their shared history and the Dutch language, the Netherlands and Belgium have strong cultural ties. In 1980, the two countries set up the Dutch Language Union to encourage greater cooperation in the field of Dutch language and literature. The Union offers services including language tools like dictionaries and a language advice service, education in and about Dutch, literature and reading skills, and activities promoting the Dutch language in Europe and the rest of the world. The Union also works to showcase the two countries’ shared cultural