De geschiedenis van het Groothertogdom van vandaag begint in 1815 op het Congres van Wenen. ###>The history of modern Luxembourg begins with the Congress of Vienna in 1815, as a result of which it became a Grand Duchy, under the Dutch king, William I (of the Orange-Nassau dynasty), and was granted the status of a sovereign State, while losing to Prussia its former territories to the east of the Moselle, the Sûre and the Our.