Explain who was responsible for the television advancement and how the advancement affected 20th-century life.

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.    

answer; /// i believe that the correct answer is (d)the huang he river valley;

isolationism is a doctrine practiced by the united states for much of its history with the aim of not intervening in external affairs that did not pose a real threat to their country. the united states managed to maintain a state of political isolation throughout the nineteenth century and the first part of the xx. few nations have been able to maintain such a position for such a long period of time. historians argue that it is largely due to geographical reasons, given the physical distance between europe and the usa. uu the venataja of this situation is that the national state can spend its resources in satisfying all the needs of its inhabitants, without the need to invest in armament and equipment for a war that does not directly affect the country.

internationalism is a political and cultural movement that advocates for greater political and economic cooperation among nations for mutual benefit. this novimiento was transformed over time, today it includes military intervention in international conflicts with the objective of maintaining peace. the advantage of this move is in the international contacts and the influence developed by the country that carries it forward.

between the two modes of relations between states, i prefer the first, since i believe it is of the utmost importance to satisfy the needs of citizens and work for their development and as a last option to act on the international level.