1. what is one way in which materialism influence the nations of europe prior to world war i?
a. imperialism threatened the imperial system
b. materialism caused the alliance system to break down .
c. materialism contributed to european arms race .
d. materialism discourage nations from foreign trade.

2.on the western front the major military strategy that lead to four long years of war was
a. the use of trench warfare
b. the use of tanks
c. the use of aerial reconnaissance
d. the use of cavalry