Which statement describes an effect of poisonous gases used in combat during world war i?

a. poisonous gases blistered soldiers’ skin, eyes, and lungs.
b. poisonous gases brought an end to trench warfare.
c. poisonous gases melted weapons and other armaments.
d. poisonous gases caused explosions in the presence of gunpowder.

Correct answer choice is :

Poison gas was applied for the first time at the Second Battle of Ypres in April 1915. As such, all companies in the area were assigned to the firing line of their main right in the path of the chlorine. Its influence was instant and destructive. The French and their Algerian companions retreated in fear.

alliances in ww1 were different from ww2 because the entente in ww1 made up of serbia,russia,france,britan,japan and italy later america  and all allied in a sort of balance of power and too keep germany,austria-hungary,and the ottomans down. russia allied the serbians in order to exert its influence in the balkans while france allied the russians because france was still in dismay and insulted after the defeat to the germans during the unification of germany and britian allied the belgians after the germans invasion of belgium.in ww2 the alliances were in a preemptive attempt to deter any further wars into happening while germany and italy allied since they were insulted and humiliated after the previous war while also sharing a similar ideology of facsim along with japan which all 3 had a want for world domination and agreed to assist one another in the endevours 

explanation:

booker t. washington was an educator who established the tuskegee institute. washington argued that african americans should learn trades that would offer them the opportunity to be progressive citizens. instead of fighting against discrimination, washington argued that african americans should use their education and knowledge to become self-sufficient in american society and not in competition with white americans.

w.e.b du bois was the founder of the niagara movement and later the naacp, du bois disagreed with washington. he argued that african americans should consistently fight for racial equality.

ida b. wells was a journalist who wrote about the horrors of lynching in the south. wells work could be considered muckraking as it led to the development of the anti-lynching campaign.