Original sentence: German nationalists, including Nazis, used the old flag in protest against the Weimar Republic during the 1920s and 1930s.In 1919, the flags of Imperial Germany were scrapped and replaced by those of the Weimar Republic: black-red-gold tricolour.It had Prussia's national colours of white, the eagle of Prussia, with the German imperial black-white red tricolour in the upper canton with an Iron Cross
Edited sentence: German nationalists, including Nazis used the flag in protest against the Weimar Republic during the 1920s and 1930s.In 1919, the flags of Imperial Germany were scrapped and replaced by those with the Weimar Republic black-red-gold tricolour.It had Prussia's national colours of white, the eagle of Prussia, and with the German imperial black-white red tricolour in the upper canton with an Iron Cross defacing it