Answer:
''Steam boat willie'' is a short animated American film which was directed by Walt disney and Ub Iwerks and it was released by celebrity productions. This was an immediate sensation and dominated the market of animation for several years allowing the United states to rule the market.
This was the third mickey movie which took country by storm and the missing element of sound in animation had been added in this movie which made illusion of life more complete and giving the country it's first sound animated movie. This film also contributed in changing the copyright act of the United States to protect mickey.