Why is washington dc called the center of government

What Percentage Of Electricity Is Generated In Washington By Wind Power, The Money Behind The Power In Washington, What Makes Washington Dc The Most Powerful City In The World, Why Is Washington Dc Called The Center Of Government, Why Is Washington Dc The Capital.
What Percentage Of Electricity Is Generated In Washington By Wind Power, The Money Behind The Power In Washington, What Makes Washington Dc The Most Powerful City In The World, Why Is Washington Dc Called The Center Of Government, Why Is Washington Dc The Capital.