Essay in life after 200 years

Which resource is most useful for finding the correct spelling of words?

Explain the effect of the juxtaposition of the following lines that serve as a beginniing to the new section that begins on page nine: anguish. german soldiers-with their steel helmets and their deaths-head emblem. still, our first impressions of the germans were rather reassuring.

Me this is due tomorrow and i'm having a hard time with the reading