1. In 1795, Kamehameha I successfully conquered the island of Maui, after a fierce battle that lasted for several months. This victory helped to establish the first unified kingdom of Hawaii.

2. On May 18, 1912, the first airplane landed in Hawaii. The plane, a Curtiss Model D, was piloted by James D. Dole, who later went on to establish the Dole Pineapple Company.

3. In 1959, Hawaii became the 50th state of the United States. The admission of Hawaii to the Union was a significant milestone in the history of the islands, which had been under the control of various foreign powers for centuries.

4. On May 18, 1980, the eruption of Mount St. Helens in Washington state led to a massive ash cloud that reached all the way to Hawaii. The volcanic ash caused some flight cancellations and forced many people to wear face masks to avoid breathing in the particles.

5. In 2009, President Barack Obama visited Hawaii for the first time since taking office. The visit, which included a trip to the USS Arizona Memorial at Pearl Harbor, was seen as a significant moment in the history of the state, which has strong ties to the military and to the presidency.