which best explains how gas attacks affected
warfare during WWI?
A. Gas attacks allowed Germany to win
major battles and defeat France before
the US joined the war
B. Gas attacks resulted in the deaths of
millions of civilians and led people to
demand an end to war
C. Gas attacks made fighting in trenches
difficult and had major psychological
effects upon troops
D. Gas attacks terrified troops and led
them to demand a truce between the
Allied Powers and the Central Powers