1. In 1864, President Abraham Lincoln signed a bill allowing Idaho Territory to be created. May 16 is now celebrated as Idaho Day, commemorating this important moment in the state's history.

2. In 1896, Idaho became the fourth state to grant women the right to vote, more than two decades before the federal government would follow suit with the 19th Amendment.

3. In 1917, the Gooding College basketball team won the national intercollegiate basketball title, defeating Western Reserve University 37-36 in a thrilling game. This event is still celebrated in the town of Gooding every year on May 16.

4. In 1973, the Snake River Stampede was established in Nampa, Idaho. This annual rodeo has become a major event in the region, drawing thousands of spectators and top rodeo talent from around the world.

5. In 2012, the Idaho State Capitol Building was designated a National Historic Landmark, recognizing its importance as a symbol of the state's political history and architecture. On May 16 of that year, a special ceremony was held to commemorate the occasion.