Answer:
Absolute advantage
Explanation:
Absolute advantage refers to a situation when an individuals or organizations able to produce more with significantly lower efforts compared to other competitors around them.
From the excerpt above, we can infer that Bob could do various useful things related to camping compared to his other inexperienced friends. So when they're being put together, there is no doubt that Bob would be far more useful on the camp compared to other, and he will be put in higher regards in that community.
I'm pretty sure the Aurora Astralis is referred to as the Southern Lights or the Southern Polar Lights.
I would say D) Geology. That's a whole other subject itself. Economics, geography, and history all fit into the category Social Studies. That is things happening around the world. Social stuff. Hence the name Social Studies. So once again, D is your answer. Geology is about the science that deals with the earth's physical structure and substance, its history, and the processes that act on it.<span> The geological features of an area.</span> That would not fit in.
~Silver
He factors<span> which </span>contributed to the rise of nationalism in the 1810s<span> were the general zeitgeist of the people who considered that the ethnic groups of Europe should live in their own countries and not in huge empires where their particular ethnic group wasn't represented. Hope this works!</span>