 Complete the following phrase:  The German Duden lexicon defines Vergangenheitsbewältigung as public debate within a country on a problematic period of its recent historyin Germany on National Socialism, in particularwhere problematic refers to traumatic events that raise sensitive questions of collective culpability. In Germany, and originally, the term refers to embarrassment about and often remorse for Germans complicity in the war crimes of the Wehrmacht, Holocaust, and related events of the early and mid-20th century, including World War II. In this sense, the word can refer to the psychological process of denazification. With the accession of the former German Democratic Republic into the current Federal Republic of Germany in the reunification of 1990 and the 