1. In 1954, the U.S. Marine Corps War Memorial, also known as the Iwo Jima Memorial, was dedicated in Arlington County, Virginia. The memorial depicts the famous raising of the American flag on Iwo Jima during World War II and is considered one of the most recognizable symbols of the Marine Corps.

2. On November 12, 1921, the Tomb of the Unknown Soldier was dedicated at Arlington National Cemetery. The tomb contains the remains of an unidentified American soldier who died in the First World War, and serves as a national monument to all unidentified fallen soldiers.

3. In 1800, the U.S. Capitol building in Washington D.C. was opened to the public. The building, designed by William Thornton, was first used by Congress in November of that year.

4. On November 12, 1960, the U.S. Army Corps of Engineers completed the construction of the Chief Joseph Dam on the Columbia River in Washington State. The dam, which stands 550 feet tall, was named after the Native American leader Chief Joseph of the Nez Perce tribe.

5. In 1909, the National Association for the Advancement of Colored People (NAACP) was founded in New York City. The organization, which seeks to secure the rights of African Americans, has played a prominent role in the civil rights movement and continues to advocate for equality and justice for all.