Rettbach (Rot) is a river of Thuringia, a federal state in the central of which country?
Thuringia The Free State of Thuringia ( ; German: "Freistaat Thüringen" , ] ) is a federal state in central Germany.
Evangelical Church in Central Germany The Evangelical Church in Central Germany (German:"Evangelische Kirche in Mitteldeutschland") is a United church body covering most of the German states of Saxony-Anhalt and Thuringia and some adjacent areas in Brandenburg and Saxony.