Snow White and the Seven Dwarfs was created by Walt Disney in 1937. Its was the first feature length cel-animated movie ever created and was of great success. Previous to Snow white and the Seven Dwarfs, Walt Disney had focused on creating animated shorts which featured well known characters of today such as Mickey Mouse.
Snow White and the Seven Dwarfs trailer link
Due to its success Walt Disney then went onto create many more feature length animations which are still of great success today, just as they were when they were on release.