Here are 5 interesting facts about February 4 in Wisconsin history:

1. In 1820, the Wisconsin Territory was created by an act of Congress. At the time, Wisconsin was part of the larger Michigan Territory, but due to its growing population and the need for a more localized government, it was separated out as its own entity.

2. On February 4, 1848, Wisconsin became the 30th state in the United States. It was the first state to enter the Union after the original 13 colonies and was the last state formed from the Northwest Territory.

3. In 1885, the Milwaukee Electric Railway and Light Company was founded. This company was a major player in the development of public transportation in Milwaukee and played a significant role in the city's growth and development over the course of the 20th century.

4. On February 4, 1922, the legendary Wisconsin conservationist Aldo Leopold began his career with the U.S. Forest Service. Leopold is widely regarded as one of the most important figures in the modern environmental movement and his work on conservation and ecology has had a profound impact on our understanding of the natural world.

5. On February 4, 1989, the Green Bay Packers defeated the Denver Broncos in Super Bowl XXI, bringing home the franchise's fourth Super Bowl title. The game was played in San Diego, California, and was a historic moment for the city of Green Bay and the team's legions of devoted fans.