This section's tone or style may not reflect the encyclopedic tone used on Wikipedia See Wikipedia's guide to writing better articles for suggestions (May 2018) (Learn how and when to remove this template message). Washington D.C United States founded as a compromise between more urbanized Northern states and agrarian Southern "slave states" to share national power This is called the Compromise of 1790 resulting in the passage of the Residence Act which approved the creation of a national capital on the Potomac River on land ceded from Maryland and Virginia. .
. Washington D.C. Business Directory Union soldiers manning the Lower Battery at the north end of Chain Bridge in 1862. View of the Potomac River from George Washington's birthplace in Westmoreland County Virginia Washington D.C. Business Directory. . . .