I would say A because your talking about climate and terrain and i think of nature
The answer would be: <span>Changing Age Structure of the Population
In order to create a successful marketing campaign for their products, marketing teams need to pay attention to the difference in taste that a new age group has compared to the older one. Because one day, the new age group will grow up to be the demographic that held the most economic power.
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Depends on what relationship you have with this "other guy". If he's just a friend to you it shouldn't even be considered romance unless you flirt or hook up. If he is a romantically relationship than you are definitely cheating.
During the majority of WWI, the United States wanted to remain isolated in what many considered to be a European conflict. President Woodrow Wilson himself advocated isolationism until a series of conflicts drew the US into war against Germany.