There are several people responsible for television advancements, such as Kenjiro Takayanagi. In 1924, he built the first all-electronic TV system in 1924.
Two years later, inventor John Logi Baird made the first demonstration of live television in London.
Alan Dower Blumlein patented the stereo system and worked on a high-definition TV system on the 30s.
After several years of development, the first transatlantic television signals were made in the 60s and changed people's lives forever.
Since then, TV viewers around the world have been able to see the world's news and events in a completely different way. They also found the most entertaining and popular electronic device of the 20th century.
Explanation:
a )they help historians focus on the effect of one important idea on different societies over time
Answer:
C. They helped the American colonies.
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