1. In 1837, Wisconsin became a separate territory from Michigan, marking an important milestone in its history. Prior to this, the state was part of the Northwest Territory and then the Michigan Territory.

2. On January 6, 1857, the first meeting of the Wisconsin State Agricultural Society was held in Madison. This organization played a key role in promoting agriculture in the state, including organizing fairs and exhibitions.

3. In 1887, the Milwaukee Brewers baseball team was founded. The team has had several name changes and played in different leagues over the years, but remains an important part of Wisconsin sports history.

4. January 6, 1919, marked the start of Prohibition in the United States, which had a significant impact on Wisconsin's brewing industry. Many breweries in the state were forced to close, and some turned to producing non-alcoholic beverages instead.

5. On January 6, 2020, Wisconsin held its presidential primary election. The state played an important role in the 2020 election, with both major political parties holding their national conventions in Milwaukee and the state ultimately being a key battleground in the presidential race.