1. In 1907, Oklahoma became the 46th state to enter the Union. The decision was made by President Theodore Roosevelt, who signed the Oklahoma Statehood Bill after years of debate and negotiation.

2. In 1913, the world's largest concrete structure at the time was completed in Oklahoma. The Garber-Wellington Canal was designed to irrigate farmland and provide a steady supply of water to Oklahoma City.

3. In 1923, oil was discovered in the Seminole-Creek oil field, which is located in central Oklahoma. The discovery brought a boom to the state's oil industry and helped establish Oklahoma as a major oil-producing state.

4. In 1934, federal agents led by J. Edgar Hoover raided a farmhouse near Shawnee, Oklahoma, where they killed notorious bank robber Charles "Pretty Boy" Floyd. Floyd had been on the run for several years and was wanted for a string of robberies across several states.

5. In 1965, a tornado struck the town of Cherokee, Oklahoma, killing seven people and injuring more than 100 others. The tornado was part of a larger outbreak of severe weather that affected several states, causing widespread damage and loss of life.