1. The Battle of Killdeer Mountain took place on July 8, 1864, in what is now Dunn County, North Dakota. This battle was part of the Dakota War of 1862 and involved a group of Dakota warriors and a Union Army force led by Brigadier General Alfred Sully. The battle resulted in a Union victory and marked the final conflict between the Dakota and the U.S. Army in North Dakota.

2. On July 8, 1892, the town of Minot, North Dakota, was incorporated. Minot is located in Ward County and is the fourth-largest city in North Dakota. It was named after Henry D. Minot, a Burlington Railroad executive.

3. On July 8, 1918, the Sullivan Law was enacted in North Dakota. This law required farmers and ranchers to fence their land off from highways in order to prevent livestock from wandering onto the road. The law was named after William H. Sullivan, who was the state engineer at the time.

4. North Dakota became the 39th state to ratify the 26th Amendment to the U.S. Constitution on July 8, 1971. This amendment lowered the voting age from 21 to 18 years old. It was proposed by Congress in March 1971 and ratified by the states in just three months.

5. On July 8, 2011, the city of Minot experienced historic flooding as a result of heavy rainfall and melting snow. The Souris River, which runs through the city, overflowed its banks and caused significant damage to homes and businesses. More than 11,000 residents were evacuated from the city, and it took several months for the floodwaters to recede.