when did washington dc became the capital
Washington D.C., Became the Capital July 16, 1790. L'Enfant designed wide avenues and open spaces so that the capital would not become a city of crowded buildings.He knew that people would need parks where they could walk and relax.ashington D.C., Became the Capital July 16, 1790. L'Enfant designed wide avenues and open spaces so that the capital would not become a city of crowded buildings. He knew that people would need parks where they could walk and relax.