History of Luxembourg

entually surrendered, and as a consequence, Luxembourg was annexed by the French Republic, becoming part of the department of Forts, with Luxembourg City as its prefecture. Under the 1815 Treaty of Paris, which ended the Napoleonic Wars, Luxembourg City was placed under Prussian military control as a part of the German Confederation, although sovereignty passed to the House of Orange-Nassau, in personal union with the United Kingdom of the Netherlands.

After the Luxembourg Crisis, the 1867 Treaty of London required Luxembourg to dismantle the fortifications in Luxembourg City. Their demolition took sixteen years, cost 1.5 million gold francs, and required the destruction of over 24 km (15 mi) of underground defenses and 4 hectares (9.9 acres) of case mates, batteries, barracks, etc. Furthermore, the Prussian garrison was to be withdrawn.

When, in 1890, Grand Duke William III died without any male heirs, the Grand Duchy passed out of Dutch hands, and into an independent line under Grand Duke Adolphe. Thus, Luxembourg, which had hitherto been independent in theory only, became a truly independent country, and Luxembourg City regained some of the importance that it had lost in 1867 by becoming the capital of a fully independent state.

Despite Luxembourg's best efforts to remain neutral in the First World War, it was occupied by Germany on 2 August 1914. On 30 August, Helmuth von Moltke moved his headquarters to Luxembourg City, closer to his armies in France in preparation for a swift victory. However, the victory never came, and Luxembourg would play host to the German high command for another four years. At the end of the occupation, Luxembourg City was the scene of an attempted communist revolution; on 9 November 1918, communists declared a socialist republic, but it lasted only a few hours.

In 1921, the city limits