1. In 1848, Wisconsin became the 30th state in the United States. Known as the "Badger State", Wisconsin's economy was originally based on agriculture, but later expanded to include manufacturing, mining, and tourism.

2. On July 15, 1862, the Battle of Murfreesboro began during the American Civil War. Many soldiers from Wisconsin fought in the battle, which resulted in a Union victory.

3. One of Wisconsin's most famous residents, Laura Ingalls Wilder, was born on July 15, 1867 in Pepin, Wisconsin. The author is best known for her "Little House on the Prairie" book series, which chronicles her childhood experiences growing up in the Midwest.

4. In 1937, the Wisconsin State Capitol building in Madison was completed. Designed in the Beaux-Arts style, the building is home to the state's legislative and executive branches and is a popular tourist attraction.

5. On July 15, 2016, the Milwaukee Bucks announced plans for a new $524 million arena in downtown Milwaukee. The arena, which opened in 2018, is home to the Bucks and has also hosted concerts, events, and the Democratic National Convention in 2020.