1. 1783: The Treaty of Paris was signed in Paris, France, officially ending the American Revolutionary War between Great Britain and the newly formed United States of America. This treaty recognized the independence of the United States and established its borders.

2. 1814: During the War of 1812, British forces captured Washington, D.C. and burned many government buildings, including the White House and the Capitol. This event is known as the Burning of Washington.

3. 1922: The first radio broadcast of a Major League Baseball game was aired in Washington, D.C. This game featured the Washington Senators and the New York Yankees, with the Senators winning 7-1.

4. 1959: The first successful presidential telecast took place in the United States, with President Dwight D. Eisenhower delivering a speech from the White House to the nation.

5. 2008: The historic Howard Theatre in Washington, D.C. reopened after being closed for nearly 30 years. The theater played a significant role in African American history and culture, hosting performances by legends such as Duke Ellington, Ella Fitzgerald, Marvin Gaye, and The Supremes.