it is wanshing,d.c.it is in thn east of the united states

It is Washington D.C.It is in the east of the United States
它是哥伦比亚特区华盛顿,位于美国东部.
Washington,D.C.(或 Washington,District of Columbia)哥伦比亚特区华盛顿(即美国首都华盛顿)