Question: when was alsace and lorraine taken from france
Answer: Imperial Territory of Alsace - Lorraine Reichsland Elsaß - Lothringen ( German ) , Terre d'Empire d'Alsace - Lorraine ( French ) Imperial Territory of the German Empire ← 1871 -- 1918 → Flag Coat of arms Anthem Elsässisches Fahnenlied `` The Alsatian Flag 's song '' Alsace - Lorraine within the German Empire Capital Straßburg ( Strasbourg ) Government Federal territory Reichsstatthalter 1871 -- 1879 Eduard von Möller ( first ) 1918 Rudolf Schwander ( last ) Legislature Landtag History Treaty of Frankfurt 10 May 1871 Disestablished 1918 Treaty of Versailles 28 June 1919 Area 1910 14,496 km ( 5,597 sq mi ) Population 1910 1,874,014 Density 129.