1. On April 12, 1876, the town of Bismarck was officially recognized as the capital of North Dakota. Prior to this, the capital had been located in a number of different cities, including Yankton, Fargo, and Jamestown.

2. In 1898, the first recorded automobile accident in North Dakota occurred on April 12. The accident involved a car owned by a man named A.J. Ely, who was driving on the streets of Grand Forks when his car collided with a buggy.

3. April 12, 1937 marked the first flight of a new type of aircraft known as the Northrop BT-9. The BT-9 was a training aircraft designed to be used by the United States Army Air Corps.

4. On April 12, 1953, the Minot Air Force Base was officially dedicated. The base is located in Ward County and is one of two bases in the United States that operate B-52 strategic bombers.

5. In 1980, the North Dakota State Senate voted to ratify the 19th Amendment to the United States Constitution. The amendment grants women the right to vote and had been ratified by the necessary number of states back in 1920, but North Dakota had not officially ratified it until April 12, 1980.