1. On June 6, 1889, North Dakota was officially admitted as the 39th state of the United States. North Dakota is known for its vast agricultural lands and abundant natural resources such as oil and gas.

2. In 1944, Allied forces launched the D-Day invasion of Normandy, France during World War II. Many North Dakotans served in the war effort, including members of the North Dakota National Guard's 164th Infantry Regiment which earned the nickname "the Army's Own" for their bravery in battle.

3. On June 6, 1984, President Ronald Reagan gave a speech at the state capitol in Bismarck promoting his re-election campaign. The speech touched on many topics including the importance of agriculture, small businesses, and national defense.

4. In 2006, the North Dakota State University softball team won the NCAA Division II National Championship on June 6th. The Bison defeated Southeastern Oklahoma State University 5-2 in the championship game to earn their first national title.

5. June 6, 2011 marked the opening of the North Dakota Heritage Center in Bismarck. The center is a museum and cultural center that explores the history and culture of North Dakota through exhibits, educational programs, and events. The opening of the center was a significant milestone for the state, as it provides a comprehensive resource for education and tourism.