Answer:
- Philadelphia was the first state of the United States before Washington DC
- DC is unique among American cities because it was established by the Constitution of the United States to serve as the nation's capital
- (Pierre Charles L'Enfant) is the man who designed Washington DC
- U.S Congress (the House of Representatives and the Senate) are buildings housed in the current capital
- The Washington, DC area has lots of traffic congestion and commuting is stressful. Public transportation is limited and underused. (Possible solution: Live near your workplace or work from home) High cost of living and housing.
I hope that's helpful. And Thanks for asking