Answer:
So one can check the sources for themselves and gauge the validity of those sources leading the paper into question.
There wealthy houses and gold
No, developed countries aren't facing the challenge of hight birth rates, instead, they are facing problems like: corruption, bad policies, and lack of infrastructure along with conflict from other countries or within their own.
"<span>All of the major powers considered war to be part of a valid foreign policy" is the best option, but it should be noted that militarism was a consequence of nationalism. </span>