Developing nations tend to be more heavily affected by pandemics than developed ones because developing nations lack the resources to control the spread of disease - B. This often is the case and has also been the reason why many deadly viruses have been spread out in Africa for example or some parts of Asia in comparison to the US.
In American history it's important because it's an event in the American Revolution "The Battle of Bunker Hill"
The term Viking refers to any of the Scandinavian seafaring pirates that settled in various sections of northwestern Europe in the 8th through the 11th century.
I'd go with d, Americans were indifferent I had that question on a test so it should be right and if you are having trouble with other courses I'd be obliged to help you.
Hope this helps.
<span>Childeric I
the son of Merovech</span>