1. In 1966, the National Traffic and Motor Vehicle Safety Act was signed into law by President Lyndon B. Johnson. This important legislation created stricter safety standards for automobiles and greatly reduced the number of fatalities and injuries on American roadways.

2. On September 8, 1791, the United States Capitol building in Washington, D.C. was opened to the public for the first time. The building, which took nearly a decade to build, remains one of the most recognizable and important symbols of American democracy.

3. In 1830, the Baltimore & Ohio Railroad began regular passenger service between Baltimore and Washington, D.C. This was an important milestone in the history of American transportation, as it was the first railroad in the country to offer regular passenger service.

4. On September 8, 1974, President Gerald Ford granted a pardon to former President Richard Nixon for his role in the Watergate scandal. This controversial decision was met with strong criticism from many Americans, who felt that Nixon should have been held accountable for his actions.

5. In 2018, Washington, D.C. became the first jurisdiction in the United States to offer a non-binary gender option on driver's licenses and identification cards. This groundbreaking move was seen as an important step forward for gender equality and recognition of the diversity of gender identities.