The United states is a large country in North America.Washiton D.C.is it's capital.People from all over the world come to the U.S.but they all speak English language.It is the most developed country i...翻译一下吧，给你加5分美国是一个大国在北美国。华盛顿是它的首都。人们从世界各地来到美国，但他们都说英语语言的。它是世界上最发达的国家。要再长一点吗?