Answer:
because
because, gives reasoning rather than comparing or contrasting.
D.document sources
Hope that helps have a good day
Advancements in technology differentiated WWII from WWI by causing more deaths, increasing countries' cognizance of each others' activities, and helping ordinary citizens be more informed of the happenings of the war.
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i took the test and i got it right. also looks up the definition if you need to confirm.