"I'm going to go shopping and buy lots of clothes," the teen said after winning her $25,000 (18,374 EUR) prize from the electronics company LG.
Morgan defeated nearly 200 other competitors to become the East Coast champion and then beat West Coast champion Eli Tirosh, 21, of Los Angeles.
Morgan estimated that she sends more than 8,000 text messages a month to her friends and family.
Malaysia needs Russia's assistance in maintaining and repairing Su-30MKM fighter jets
Japanese Prime Minister Shinzo Abe said that US army bases will not appear on the southern Kuril Islands in the even Russia delivers them to Japan
Posters for the play "Adam and Eve. Life after Paradise" with pictures of dancers Arsen Aghamalyan and Oksana Vasilyeva were banned in the city of Tver, Central Russia