The Grand Duchy of Hesse and by Rhine (German: Großherzogtum Hessen und bei Rhein), or the Grand Duchy of Hesse between 1806 and 1816, was an independent country and member state of the German Confederation as of 1806, when the Landgraviate of Hesse-Darmstadt was elevated to a Grand Duchy which it remained until 1918, when the monarchy was overthrown. Hesse lost its independence when it joined the German Reich in 1871. Before 1866, its northern neighbour was its former sister Landgraviate, since 1803 an Electorate, of Hesse-Kassel – for this reason, this state was sometimes colloquially known as Hesse-Darmstadt.