Context: Red, white, and black were the colors of the German Empire from 1870 to 1918, and as such they came to be associated with German nationalism. In the 1920s they were adopted as the colors of the Nazi flag. In Mein Kampf, Hitler explained that they were "revered colors expressive of our homage to the glorious past." The red part of the flag was also chosen to attract attention - Hitler wrote: "the new flag ... should prove effective as a large poster" because "in hundreds of thousands of cases a really striking emblem may be the first cause of awakening interest in a movement." The red also symbolized the social program of the Nazis, aimed at German workers. Several designs by a number of different authors were considered, but the one adopted in the end was Hitler's personal design.

Question: During what time period did the German Empire use the colors red white and black?
Answer: 1870 to 1918

Question: What did red white and black become associated with in Germany?
Answer: German nationalism

Question: In what era did red white and black become part of the Nazi flag?
Answer: 1920s

Question: Red was chosen as part of the Nazi flag to do what?
Answer: attract attention

Question: Whose design was the Nazi flag?
Answer: Hitler's personal design

Question: What were the colors of the German Empire from 1818 to 1970?
Answer: Unanswerable

Question: What flag were the colors black, red, and white associated with in 1920?
Answer: Unanswerable

Question: Who explained the colors in Kampf Mein?
Answer: Unanswerable

Question: What workers was the social program of the Germans aimed at?
Answer: Unanswerable