Part a: which two of the following statement best summar
text?
of the following statement best summarize the central ideas of the
text?

a) world war 1 was caused exclusively by the assassination of archduke franz ferdinand.

b)historian henry kissinger was the most accomplished u. s. secretary of state in
american history.

c)no one nation or group can be singled out to blame for the outbreak of wwi.

d)the roots of wwi were planted long before the assassination of archduke franz
ferdinand.

e)trench warfare, because it was so deadly, was outlawed in future warfare at the
paris peace convention.

f)wwi permanently brought the u. s. out of isolation, deeply involving it in future
global matters, like wwii.