1. Iowa's First Public University Established: On November 6, 1847, the Iowa State University was established as Iowa's first public university. The university was founded to provide education in agriculture, military tactics, and mechanics to help promote economic growth in the state.

2. The Great Des Moines Flood of 1993: November 6, 1993, marked the day when the river in Des Moines, Iowa, reached a record high level of 24.33 feet, causing severe flooding in the region. The flood affected thousands of homes and businesses and resulted in the evacuation of more than 250,000 people.

3. Iowa's First Female Governor Elected: On November 6, 2006, Iowa's first female governor, Chet Culver, was elected. She served as the state's governor from 2007 to 2011.

4. Presidential Candidates Campaign in Iowa: Every four years, November 6 is an important day as presidential candidates begin to campaign and compete for the state's crucial caucus vote in the Iowa caucuses. Candidates usually visit the state multiple times leading up to the caucus, making Iowa an important battleground state.

5. The Birth of a Renowned Environmentalist: On November 6, 1937, the renowned environmentalist, Aldo Leopold's book "Game Management," was published, which forever changed the way wildlife was looked at in America. Leopold is known for his contributions to the conservation movement, and his book is widely considered to be an essential classic in the field of ecology.