Positive Aspect: Metro-Goldwyn-Mayer, also known as MGM, was formed in 1924 through the merging of 3 US film production companies: Metro Pictures Corporation, Goldwyn Pictures Corporation, and Louis B. Mayer Pictures Company. It has influenced and innovated the history of film up until this day by creating the world's first original film musical, having all the silent-film stars in the 20s, and producing the first sound film with an all black cast.