Luxembourg

Luxembourg was a human nation in Europe on Earth in the Sol System bordered by Germany, Belgium and France.

The present-day state of Luxembourg first emerged at the Congress of Vienna in 1815. The Grand Duchy, with its powerful fortress, became 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 French-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 had declared neutrality prior to the start of the Great War, but in 1914 its territory was invaded by the military forces of the German Empire in order to defeat France. Luxembourg was occupied by the German Empire and its successor state, the German Republic, between 1914 and 1923. In 1923 Germany voluntarily relinquished control over the parts of Belgium and Luxembourg which it had occupied since the Great War.

Luxembourg became one of the founding members of the European Union (EU) in 1951. The European Union was headquartered in Luxembourg's capital, Luxembourg City. After the European Union was merged with the Commonwealth of Nations to establish the United Commonwealth in 1968, Luxembourg City remained the seat of the United Commonwealth Parliament.

The government of the United Commonwealth federalised in 1988. The Luxembourgish government was therefore effectively absorbed into the United Commonwealth Government in 1988, and Luxembourg is largely regarded to have ceased to exist as a separate nation-state on that date.