1. In 1851, a treaty was signed between the United States government and the Sioux people in Traverse des Sioux, Minnesota. This treaty ceded a large portion of land to the United States and allowed for the establishment of the Minnesota Territory.

2. In 1959, the St. Lawrence Seaway opened to commercial traffic. This seaway connects the Great Lakes to the Atlantic Ocean and includes ports in Duluth and Two Harbors, Minnesota. It has become an important transportation route for shipping goods between the Midwest and international markets.

3. On June 26, 1998, the Boundary Waters Canoe Area Wilderness was severely damaged by a large forest fire. The fire burned over 37,000 acres of wilderness and took several weeks to fully contain. Despite the damage, the BWCAW remains a popular destination for outdoor enthusiasts.

4. In 2013, the United States Supreme Court ruled that the Defense of Marriage Act (DOMA) was unconstitutional. This ruling paved the way for same-sex couples in Minnesota and across the country to have their marriages legally recognized.

5. On June 26, 2018, Minnesota voters went to the polls for the state's primary election. Among other races, voters chose their candidates for governor, attorney general, and several congressional seats. The primary marked the beginning of the general election season and set the stage for an important election year in the state's history.