The Celts were belived to be the first inhabitants of the land now known as Germany. Also Germany started World War I and World War II. Toward the end of World War II the Berlin Wall  was created to separate the East and West side of Germany after the downfall of the Third Reiche. You may have also have heard of the Dictator who lead Germany to World War II. HE was a very inflental man to the Germans, but he was just twisted and evil.