Why was the capital changed from New York to Philadelphia?

The Founding Fathers were concerned that if the Nation's Capital was located in one of

the original states, that state would wield undue influence over the federal government,

and have more power than other states. They envisioned a state harassing the federal

government and interfering if they did not get their way in national matters. Therefore,

they created the District of Columbia (D.C.) and made that the seat of the national

government. It would not be a part of any individual state.