One fact about world war one that is very unusual. (a fact that isnt well known)

In World War 1 a fake Paris was built to fool the German pilots. Railways and road were built and were lit in mid-night to make an impression of the real Paris so that once any bomber may hit the Paris. i.e the fake one there may not happen any life loss, instead only fake buildings and railway lines may get hit.

for the points : )

explanation:

when studying cause and effect, historians usually group the causes into different categories. for example, cultural causes reflect how a society’s literature and art convey the way the society saw itself in relation to the rest of the world. another resource that historians use to understand society is pop culture, which tells them the trends and ideas that are preferred by the common people. when studying cause and effect, it’s important to remember multiple causation, or the idea that an effect could have several causes and vice versa.  

the correct option is “cultural causes” since art and literature are related to the culture of a place. culture is determined by literature, art, music.

the correct option is “pop culture” since it reflects the likes and ideas of common people whereas the rest of the options do not focus on common people.  

the correct option is “multiple causation” since it refers to the idea that events are caused by multiple reasons, not just a single one.