If you are studying for exams, resources like SchoolHistory use various ".mp4" clips (like "The Great Depression Explained") to teach American history from 1919–1941. 2. Music & Classic Rock (Yes / Simon & Garfunkel)
If the file contains music, it likely refers to the song famously covered by the progressive rock band Yes . america.mp4
The Best of Voyager | The Digital Antiquarian If you are studying for exams, resources like