1. In 1862, the Battle of Williamsburg took place during the American Civil War. A regiment from Indiana participated in the battle and suffered heavy casualties.

2. In 1913, the Indianapolis 500 was held for the first time at the Indianapolis Motor Speedway. This iconic race has been held every year since, and has become an important event in Indiana's cultural and sporting history.

3. In 1953, the Indiana State Fairgrounds Coliseum was opened. The Coliseum has hosted a wide range of events over the years, including concerts, sporting events, and political rallies.

4. In 1962, the Indiana Toll Road opened to traffic. The toll road runs for 157 miles across northern Indiana, and has played an important role in the state's transportation infrastructure.

5. In 1988, the Indianapolis Symphony Orchestra performed at Carnegie Hall in New York City. This was a significant moment for the orchestra, and helped to establish it as one of the premier orchestras in the United States.