Breve biografía de la dirigente revolucionaria Clara Zetkin, que durante alrededor de medio siglo desarrolló su militancia marxista en la extrema izquierda del movimiento obrero de su tiempo.
German communist politician. From 1935 until 1943, he held the position of Secretary of the Communist International. In 1943 Pieck was among the founders of the National Committee for a Free Germany, which planned for the future of Germany after World War II. In 1949, he became the first President of the German Democratic Republic.