who is uncle Sam?

Uncle Sam is a common national personification of the American government originally used during the War of 1812. He is depicted as a stern elderly man with white hair and a goatee beard. Typically

he is dressed in clothing that recalls the flag of the United States—for example, a top hat with red and white stripes and white stars on a blue band, and red and white striped trousers. The first use of Uncle Sam in literature was in the 1816 allegorical book The Adventures of Uncle Sam in Search After His Lost Honor by Frederick Augustus Fidfaddy, Esq.

Some accounts due that name to a local butcher,  Samuel Wilson. This was a butcher provides U.S. forces stationed

on a military base located to Troy, NY, beef, and prints in  the drums of this meat the letters  US (ie the United States) indicate that it is state-owned.The Soldiers Launched the title of Uncle Sam on the merchant. Later the letters on the drums takes the meaning of  U =  Uncle and S = Sam.