1) Wyoming became the 44th state in the United States on August 31, 1890. It was the first state to grant women the right to vote, making it a significant moment in the history of women's suffrage.

2) In 1956, the town of Jackson Hole, Wyoming was evacuated due to an unexpected and severe flash flood. The flood caused significant damage to the town, with buildings and infrastructure destroyed. This disaster resulted in new measures being implemented to prevent future flooding.

3) August 31, 1870 marked the beginning of the first territorial legislature in Wyoming, which saw the election of the first two female lawmakers in the United States, Estelle Reel and Susan Wissler.

4) On August 31, 1916, President Woodrow Wilson signed into law the National Park Service Organic Act, which established the National Park Service (NPS) to manage and preserve national parks and monuments in the United States. Wyoming is home to several national parks, including Yellowstone and Grand Teton.

5) Famous Wyoming resident and author of "Fahrenheit 451," Ray Bradbury, was born on August 31, 1920 in Waukegan, Illinois. Bradbury spent a significant amount of time in Wyoming, often using the state as a setting in his literature.