The star of 1995's Lowlands also directed the film. He worked with Karl Attenberger on a 1935 propaganda documentary. That documentary and The End of America were made in different years.
Triumph of the Will (German: Triumph des Willens ) is a 1935 German propaganda film directed, produced, edited, and co-written by Leni Riefenstahl. 
The End of America is a 2008 documentary film directed by Annie Sundberg and Ricki Stern, adapted from Naomi Wolf's 2007 book, "". 
 He worked with Leni Riefenstahl on the 1935 propaganda documenatary "Triumph of the Will". 
 The story was later turned into a sound film "Lowlands" directed by and starring Leni Riefenstahl. 
