The correct answer to this open question is the following.
Modern historians create modern narratives to help younger generations to understand history.
In modern and technological society, like we are living now, younger generations tend to forget the past, traditions or customs that were very important in the history of the country. There are many important names, characters, incidents, battles, documents, that formed this country but many young Americans are not aware or so interest in learning more about that. That is why it is so important that modern historians create modern narratives to help younger generations to understand history. To catch their attention. And not only through books, but through video, the internet or social media.
The answer to you question would be C.
hope this helps
It was invented in 1950. They started to work on it in 1930 I beleive.
