1. In 1907, Oklahoma became the 46th state in the United States. The transition from a territory to a state triggered a rush of new settlers and development in Oklahoma.

2. On January 9, 1960, Oklahoma experienced a major earthquake with a magnitude of 5.5. The epicenter was located in the town of El Reno, and the earthquake was felt across the state.

3. In 1933, the first oil well was drilled in the city of Cushing, which is now known as the "Oil Capital of the World." Today, Cushing is home to the largest oil storage facility in North America.

4. On January 9, 1863, a battle took place in the town of Fort Gibson during the American Civil War. The Confederates won the battle, but the Union troops were able to regroup and take control of the region later that year.

5. In 1893, the University of Oklahoma was established in Norman. Today, the university is one of the leading institutions of higher education in the state, with a strong reputation in fields such as engineering, business, and law.