Uncle Sam is an American nickname. Interestingly, the US Congress has formally passed a resolution confirming that this nickname is a symbol of the United States, which seems to be unique in the world. It is said that in 18 12, in Troy, new york, USA, there was a businessman named Samuel Wilson (1766- 1854) who specialized in supplying military beef. At this time, the local people used to call him "Uncle Sam", but he didn't call him by his first name. The initials of the two words in the title of Uncle Sam are U and S, which are exactly the same as the English abbreviations of American country names. Whenever the government buys Uncle Sam's beef, it will put the "America" sign on the outside of the meat box, indicating that it belongs to the American government, but the local people will immediately associate it with Uncle Sam when they see this sign. Therefore, according to this coincidence, people take "Uncle Sam" as another name for the United States. In the 1930s of 19, some cartoonists in the United States and other countries gradually visualized "Uncle Sam". In their works, Uncle Sam is a lanky old man with long hair and goatee, wearing a top hat with stars and stripes and a tuxedo. 196 1 year, the U.S. Congress actually passed a resolution recognizing "Uncle Sam" as a symbol of the United States.