Television began in approximately what period?

1920's. By the 1920s, when amplification made television practical, Scottish inventor John Logie Baird employed the Nipkow disk in his prototype video systems. On 25 March 1925, Baird gave the first public demonstration of televised silhouette images in motion, at Selfridge's Department Store in London.

following type of cultural development caused people to want and buy new products on the market :

it should be a. song dynasty’s civil service examination system created an administrative bureaucracy manned by the landed aristocracy.