If you are married, then you and your spouse can file separate tax returns. The married filing separately (MFS) filing status is generally perceived as the least beneficial of all the filing statuses.
In 1783 Congress decided to create a new capital apart from any state, and in 1787 the framers of the Constitution provided for a capital district. The U.S. capital was originally Philadelphia. Washington D.C. became the new capital on July 16, 1790.
The structure of Washington, D.C.'s city government has changed several times since the City of Washington (a smaller municipality within the District of Columbia) was officially granted a formal government in 1802.