The Walt Disney Company and starred in several Disney produced films. Ub Iwerks refined Disney's initial design of Mickey Mouse. Disney's first sound film "Steamboat Willie", a cartoon starring Mickey, was released on November 18, 1928 through Pat Powers' distribution company. It was the first Mickey Mouse sound cartoon released, but the third to be created, behind "Plane Crazy" and "The Gallopin' Gaucho". "Steamboat Willie" was an immediate smash hit, and its initial success was attributed not just to Mickey's appeal as a character, but to the fact that it was the first cartoon to feature synchronized sound. Disney used Pat Powers' Cinephone system,
The Walt Disney Company model city, EPCOT Center was built as a "permanent World's Fair", complete with exhibits sponsored by major American corporations, as well as pavilions based on the cultures of other nations. In Japan, The Oriental Land Company partnered with Walt Disney Productions to build the first Disney theme park outside of the United States, Tokyo Disneyland, which opened in April 1983. Despite the success of the Disney Channel and its new theme park creations, Walt Disney Productions was financially vulnerable. Its film library was valuable, but offered few current successes, and its leadership team was unable to keep up with other