How did world war 1 change the way in which wars are faught

World War I changed the ways wars are fought. In World War I, there were many new weapons that were introduced into combat. ... This led to the introduction of gas masks to help protect the soldiers that might be exposed to this form of chemical warfare. New technologies were used in the air, on land, and on the seas.

c]extended voting rights to african americans

whose power in the senate is equal to the power of the speaker of the house?