why is the diary of anne frank an important historical document

Anne's diary was written during the years 1942-1944. These years were the toughest times of World War II in Europe. To make sense of World War II, one must begin with the aftermath of World War I and the Versailles Treaty of 1919. In her diary, we get more than a commentary of war: we get an intimate look at human nature, coming of age, and the hope of a girl for a better future.