1. In 1842, the first wagon train to cross the Oregon Trail arrived in Idaho, led by John Bidwell. The group of 69 people and 36 wagons arrived at Fort Hall, a trading post near present-day Pocatello.

2. On August 9, 1877, the Nez Perce War came to a bloody end when Chief Joseph, leader of the Nez Perce tribe, surrendered to the US Army at Bear Paw Battlefield in Montana. The Nez Perce had been fighting to resist the forced relocation to a reservation.

3. In 1904, the first train arrived in Coeur d'Alene, a city in northern Idaho. The arrival of the train allowed for easier transportation of people and resources, leading to a boom in the mining industry.

4. The Idaho State Capitol building was dedicated on August 9, 1920. The building, located in Boise, was designed in the neoclassical style and features a dome modeled after the United States Capitol.

5. On August 9, 2002, the Boise State Broncos football team won their first-ever game in the newly-built Bronco Stadium. The team defeated the Idaho Vandals 24-10 in a rivalry game that would become known as the "Famous Idaho Potato Bowl."