30 pts in middle of quiz!! Which statement describes an effect of poisonous gases used in combat during World War 12
O Poisonous gases blistered soldiers' skin, eyes, and lungs,
Poisonous gases brought an end to trench wartare,
O Poisonous gases mehed weapons and other armaments,
O Poisonous gases caused explosions in the presence of gunpowder.

A: Poisonous gases blistered soldiers' skin, eyes, and lungs,

Explanation: because it wasn't number 2

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.