1. In 1802, the District of Columbia officially became the city of Washington, D.C., as a result of the Organic Act of 1801.
2. In 1862, President Abraham Lincoln signed the Compensated Emancipation Act, which freed approximately 3,100 enslaved individuals in the District of Columbia.
3. In 1871, the District of Columbia was granted a territorial government, which was abolished in 1874.
4. In 1917, the Women's Army Corps was established in Washington, D.C. to enlist women for non-combat military roles during World War I.
5. In 1949, the District of Columbia's first public housing project, Arthur Capper Senior Apartments, opened in Southeast D.C. to help address the city's growing housing crisis.
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