LiquidFlame

Hello! I just turned 18 recently and i would like to do a little online gambling, I went to sites like 7bit Casino and Bit Starz, since they both apparently are US friendly. When I was setting my account up, when it asked me my country, United States of America, America, or America, United States of never appeared. I was curious if any knew what to do when faced with this. Or, what site do you suggest for US citizens.