Resttschechei or Rest-Tschechei[1] (English: the rump Czech state,[2][3][4] literally the rest of Czechia[5][6][7]) was the Nazi[8] designation used for the remaining Czech parts of the Second Czechoslovak Republic that were de facto annexed by Nazi Germany on 15/16 March 1939 as the Protectorate of Bohemia and Moravia with its military occupation. This occurred after an ultimatum was presented to president Emil Hácha during his March visit to Hitler in Berlin, threatenening that its rejection would mean the downright enslavement of the autonomous Czech population.