Existing comment:
1840: Northern Liberties Fire House is first building erected on Mount Vernon Square.
1846: Congress returns the Virginia portion of DC to Virginia.
1848: Cornerstone laid for Washington Monument
1850: Chesapeake & Ohio Canal is completed
1850: Compromise of 1850 ends slave trading in DC, but does not free enslaved people
1855: Funding shortage halts Washington Monument at 55 feet
1862: April 16: Compensated Emancipation Act frees enslaved in DC |