1. In 1868, the Treaty of Fort Laramie was signed between the United States government and various Native American tribes, including the Sioux, Arapaho, and Cheyenne. The treaty established Indian reservations and promised peace and protection for the tribes, but it was not always upheld by the government.

2. In 1870, Wyoming Territory was officially organized by the U.S. government. At that time, it included portions of what is now Montana and South Dakota, as well as all of modern-day Wyoming.

3. In 1929, the town of Cokeville was founded in Lincoln County. The town was named after nearby Cokeville Creek, which in turn was named for Alonzo Coke, a fur trapper who explored the area in the mid-19th century.

4. In 1943, the Casper Army Air Base was established near Casper. The base was used for training pilots during World War II and later became the Natrona County International Airport.

5. In 1994, a 5.7-magnitude earthquake struck near South Pass City, Wyoming. The quake caused minor damage but was felt as far away as Colorado and Utah. The area is known for its seismic activity, as it sits on the edge of the Yellowstone Caldera.