sentences:  In 1801, France annexed the German lands on the Rhine’s left bank.In Napoleonic times, which ended in 1814, Frohnhofen belonged to the "Mairie" (“Mayoralty”) of Waldmohr, the Canton of Waldmohr, the Arrondissement of Saarbrücken and the Department of Sarre, whose seat was at Trier.In 1814, the French withdrew from the German lands on the Rhine’s left bank.