C) healthcare is the correct answer.
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.
I believe the answer is: It delayed or extended nationalist struggles.
The nationalist struggles come after different nations started to fully embodied nationalist movement, which make them tend to incline to prove their nation's superiority over another nations. This type of thinking often lead to conflicts among these european nations.
