1. In 1889, President Benjamin Harrison signed a proclamation admitting North Dakota into the Union as the 39th state. North Dakota was originally part of the Dakota Territory before being split into North and South Dakota.

2. On September 28, 1917, the United States declared war on Austria-Hungary during World War I. Many North Dakotans served in the military during the war, and some made significant contributions to the war effort.

3. The famous North Dakota politician William Langer was born on September 28, 1886. Langer served as North Dakota's governor and U.S. senator, and was known for his populist politics and aggressive approach to governing.

4. On September 28, 1928, the North Dakota State Capitol building was dedicated in Bismarck. The art-deco style building features a 19-story tower and houses the offices of the governor, lieutenant governor, and other state officials.

5. In 2016, the Dakota Access Pipeline protests began in North Dakota, drawing national attention and sparking a debate about the environmental and cultural impacts of the pipeline. The protests, which continued for months, brought together Native American activists, environmentalists, and supporters from around the world. September 28 marked a key moment in the protests when, after months of demonstrations, a federal judge declined to issue an injunction to stop construction of the pipeline.