Explain how the role of the federal government changed during ww1

After WWI the government changed the way they did propaganda

to a way that helped them recruit soldiers for the military.  

It also helped raise spirits of the public during WWII.

It gave the public information on ways they could help their  

country without having to joining the army.

Explanation:

citizens get the vast majority of their political and governmental information from the media, which includes television, print journalism, radio, and now the internet. the media play an important role in connecting people to government.