What do these numbers refer to? 1970s 38 13 5 The Internet was only used by academics and military researchers. The number of years it took for radio to reach 50 million users. The number of years it took for TV to reach 50 million users. The number of years it took for the Internet to reach 50 million users.

Задание

What do these numbers refer to?

Объекты 1
- 1970s
- 38
- 13
- 5
Объекты 2
- The Internet was only used by academics and military researchers.
- The number of years it took for radio to reach 50 million users.
- The number of years it took for TV to reach 50 million users.
- The number of years it took for the Internet to reach 50 million users.