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 Belgium–Netherlands relations Belgian–Dutch relations refer to interstate relations between the Belgium and the Netherlands. It can be seen as one of the closest international relationships in existence, marked by shared history, culture, institutions and language, extensive people-to-people links, aligned security interests, sporting tournaments and vibrant trade and investment cooperation. Relations were established after Belgium became independent from the United Kingdom of the Netherlands in 1839. Both nations are great allies with cultural similarities and close cooperation between both governments. The language spoken in Belgium is known as "Nederlands/Dutch", is the most-spoken language in both countries. Approximately 35,000 Belgian nationals live