Hitler sought to make use of this as casus belli, a cause for war, reverse the put up-1918 territorial losses, and on many events had appealed to German nationalism, promising to "liberate" the German minority nonetheless within the Corridor, as well as Danzig. German nationals residing exterior the territory of the previous Reich inside its frontiers as of December 31, 1937; these belonging to individuals residing in Austria, Czechoslovakia, the previous annexed territories in Eastern Europe, ...