8. disruption in trade
9. there was renewed sense of nationalism
Well without full context I would assume Trench Warfare because thats what 3 1/2 of the 4 year wars where full of.
<span>an extensive group of states or countries under a single supreme authority, formerly especially an emperor or empress.</span>
Domestic Policy is responsible for the internal affairs of the nation, the welfare of its citizens, the economy, the environment, and the infrastructure of the United States.
