Answer:
Well there are 3 most common rhetorical devices
Those of which would be
Ethos: Well this is usually in the form of credibility and shows how reliable a source can be when using this device. Like for example if your gonna quote an article form “George Washington”, its gonna be more eye appealing to others due to him being one of the most famous genrals in US/ history and being the first president and all.
Pathos: This is when your usually combining a feeling and making the reader feel something like for example portating guilt or Sadness could be a useful tool.
Logos: This is just straight up facts, you support your evedine with reliable #1 and Jsut back it up with a ton of facts but don’t use too much or it would just be boring.
Well theres some pathos in this but I would say mainly ethos becuase it shows uncle sam, one of the most common faces in american cartoons and propaganda. It shows a lot of credibility.