How did WWI and WWII affect Europe overall ? and how these two compared in effects?

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.^.

New member
which kinds of things were changed or did change due to WWI and WWII? and how would have been without these two wars?

how these two wars compared in number of innocents as well as men killed? and why , what anyone would gain from this , if this is true that these wars were "orchestrated" by rich industrialists? (if true)

please explain what you can

thanks for your answers!
 
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