Final answer:
Animated movies have evolved over the last century, with significant contributions from Winsor McCay and Walt Disney.
Step-by-step explanation:
Animated movies have changed a lot over the last 100 years. Winsor McCay, considered the father of animation, animated his films by himself in the early 1900s. He drew every picture separately and had them photographed one at a time. Hundreds of photographs were needed to make a one-minute film. In 1914, the development of Celluloid, a transparent material, made animation easier. Instead of drawing each picture separately, the animator could make a drawing of the background, which remained motionless, while only the characters moved. Walt Disney took animation to a new level. He created Mickey Mouse, added sound and music to his movies, and produced the first full-length animated film, Snow White and the Seven Dwarfs.
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