1. In 1846, Iowa became the 29th state in the United States. The state was admitted to the union on November 3, following a congressional vote to approve Iowa's statehood.

2. On November 3, 1875, an important battle took place between the U.S. Army and a group of Lakota Sioux warriors in northwestern Iowa. The battle, known as the Battle of Warbonnet Creek, was part of the Black Hills War and resulted in a significant defeat for the Lakota.

3. In 1914, the U.S. Post Office Department began offering rural mail delivery service to the residents of Iowa. The new service made it possible for people living in rural areas of the state to receive mail and packages directly at their homes.

4. On November 3, 1953, the National Farm Institute was established in Ames, Iowa. The Institute was created to provide education and support to farmers across the country, and it continues to operate today as the National Farmers Organization.

5. In 1992, Iowa became the first state in the nation to hold a presidential caucus, when the Iowa Democratic Party held its caucus on November 3. The caucus system has become an important part of the presidential election process, with Iowa's caucuses often seen as a barometer of a candidate's potential support in the general election.