1. On November 20, 1895, the Idaho State School for the Deaf and Blind was established in Gooding, Idaho. The school has since provided education and support services for students with visual and hearing impairments from all over Idaho.

2. In 1934, President Franklin D. Roosevelt signed the Taylor Grazing Act into law. The act established a system for regulating grazing on federal lands across the western United States, including Idaho. This system has had a significant impact on the management of public lands in Idaho and throughout the west.

3. The Idaho State Capitol building was completed on November 20, 1912. The building, located in Boise, Idaho, is home to the Idaho Legislature and other state offices. It is also one of the most distinctive and recognizable buildings in the state.

4. On November 20, 1985, the volcano Nevado del Ruiz in Colombia erupted, resulting in the deaths of nearly 25,000 people. During the crisis, Idaho Falls-based disaster relief organization Operation Lifeline provided aid and support to the victims and survivors.

5. November 20, 1910, marked the beginning of one of the largest wildfires in recorded history—the Great Fire of 1910. The fire burned over three million acres in Idaho, Montana, and Washington, and killed 87 people. The fire had a major impact on the management of the U.S. Forest Service and led to the development of new firefighting techniques and policies.