1. What is one way in which materialism influence the nations of Europe prior to World War I?
   

AImperialism threatened the imperial system

BMaterialism caused the alliance system to break down .

CMaterialism contributed to European arms race .

DMaterialism discourage nations from foreign trade.

2.On the western front the major military strategy that lead to four long years of war was

AThe use of trench warfare

BThe use of tanks

CThe use of aerial reconnaissance

DThe use of cavalry