Final answer:
Television development by key countries and technological advancements.
Explanation:
Television was developed with the contributions of various countries, with key players including the United States, Germany, France, Japan, and the United Kingdom. Early technological advancements, such as the invention of the cathode ray tube by Karl Ferdinand Braun in 1897, set the stage for the evolution of television from mechanical to electronic versions. Visionaries like Paul Nipkow and later innovators like Vladimir Zworykin, John Baird, and Philo Farnsworth played crucial roles in shaping the modern television we know today.
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