Answer:
The use of Uncle Sam to represent the US is often used in political cartoons is an example of symbolism.
Step-by-step explanation:
Symbolism is a technique that uses symbols to give symbolic meanings to ideas.
Uncle Sam is a popular symbol for the US; It was purposefully designed to interpreting and framing political discourse and national identity. Uncle Sam is a very influential and iconic symbol of America, it is used to represent the American nation in foreign press; it was also present in War recruiting posters. In all, is a familiar symbol of patriotism and government of the US.