WWI German Helmets For Sale and other collectibles from WWI

Poster War

What do you mean by propaganda poster? This is my history project in February to make a propaganda poster from World War 1?

I can not understand how can do what I do not know what is propaganda poster.

Posters are basically everything that is supposed to evoke feelings to achieve goal. Uncle Sam says "I love you" All the portraits of communist rule at the time, warning signs "Beware of the Huns," and posters with the 2nd World War II "Rosie the Riveter" TP bring women into the factories.