Question

Which of these techniques was used extensively during World War I?

trench warfare
guerilla tactics
aerial bombing
airborne forces

Answer 1

Which statement explains how passage of the Selective Service Act affected World War I?

It gave Russia the chance to withdraw its troops from fighting without hurting the Allies.
It influenced Germany to resume unrestricted submarine warfare against U.S. merchant ships.
It increased the capacity of the United States to provide military support to the Allies.
It pushed the Central Powers into instituting a draft to meet the threat of American force.

Answer 2

trench warafre, and the second question is c