what is full form of u.s.a. [plase answer quikly] Share with your friends Share 3 Urshita Sharma answered this It is United States of America. 4 View Full Answer Bhaswati Debi answered this tank you urshita -1 Rohit Raj answered this United States America. Like please. 2 Abantika answered this The full form of U.S.A is United States of America.Thumbs up please 1