Pretty sure it's [sarcastic] haven't checked for sure
Answer:
Adverbial clause
Explanation:
An adverbial clause is a subtype of dependent clauses and it functions as an adverb in a sentence. Usually, it has both a subject and a verb.
In this case, we have an<em> adverbial clause of concession </em>marked with subordinating conjunction<em> even though</em>. Some other conjunctions used in this type of clause are: after, if, although, unless, so...that, as if, since...
Besides the adverbial clause of concession, we have also the adverbial clauses of time, place, manner, comparison, purpose...
The correct asnwer to this question is 1 3 and 4 or
It shed light on the benefits of slavery.
It ignored the unique cultures of different regions of the country
It mirrored the somberness of postwar America with a new realism.
The type of supporting material that you employ in an essay is directly related to the claim that you make in your paper. Different claims and arguments require different levels of evidence and support. Moreover, the type of support they need will also vary. Some claims might need numerical support, while others might need the consensus of experts.
For example, imagine a historical essay that wants to prove that World War II was more deadly than World War I. This essay would most likely need statistical evidence that would come from public records. Compare this to an essay that argues that World War II had a deeper impact on culture and society than World War I. This essay will require different types of materials, such as essays written by other people supporting either position.