1. In 1923, the Iowa State Highway Commission was created. It was responsible for planning, constructing, and maintaining the state's highway system. Today, the Iowa Department of Transportation oversees the state's transportation infrastructure and services.

2. On March 18, 1937, a severe flood hit Iowa and several other Midwestern states. The flood was caused by heavy rains and snowmelt, and it resulted in significant damage to homes, businesses, and infrastructure. Many communities were left underwater for weeks, and thousands of people were displaced.

3. In 1965, the first Iowa State Wrestling Championships were held in Cedar Falls. The tournament has since become one of the most prestigious high school wrestling competitions in the country, attracting top athletes from around the state and beyond.

4. On March 18, 1983, a fire broke out in the Farrar Schoolhouse near Des Moines. The historic building was completely destroyed, but the community rallied together to save its bell tower and repurpose it as a town landmark.

5. In 2016, the Iowa Caucus marked a major milestone in the US presidential election cycle. The caucus, which is the first statewide presidential nominating contest in the country, drew intense media attention as candidates from both major parties campaigned across the state in the weeks leading up to the event. Ultimately, Donald Trump and Hillary Clinton emerged victorious in their respective parties' contests.