This 450-word document discusses the history and development of the television industry. It outlines how television started in the late 1920s and early 1930s with experimental mechanical systems. It grew slowly at first but took off in the post-World War II era as improvements were made and costs decreased. By the 1950s, over 90% of American households owned at least one TV set, and networks were well established. The document continues discussing the colorization of television in the mid-1950s and the introduction of cable and satellite technologies in later decades that transformed the industry.

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