Original: Headquartered in Berlin, it came into existence in 1994 as the successor to the former state railways of Germany, the Deutsche Bundesbahn of West Germany and the Deutsche Reichsbahn of East Germany.
Simplified: It was founded on January 1, 1994 to replace the Deutsche Bundesbahn, which was the state railway of West Germany, and the Deutsche Reichsbahn, which was the state railway of East Germany.