Answer :
They were used to make people want to join the army and instill pride in our soldiers. They were also used to make america seem flawless and impenetrable by other countries.
During the time of World War 1, posters were a major tool for broad distribution of news and information about the war.
What are propaganda posters?
Propaganda posters are the posters which are used with a specific purpose. They are used to promote a particular propaganda.
The four reasons for which propaganda posters were used are:
- To recruit men who would join the army.
- To recruit women to work in the factories and women led war zones.
- To encourage and influence people to not waste food but save it for later purposes.
- To boost the morale of the people.
Hence, these are the reasons for which propaganda posters were used to influence Americans behaviour during world war 1.
Learn more about World War 1 on https://brainly.com/question/971935
#SPJ2