In December 1901, botanist Alexander Pierce Anderson created puffed rice while experimenting with starch crystals in his laboratory. Although he did not yet realize the significance of his discovery, Anderson's new breakfast food would make him a nationally known figure and the face of a Quaker Oats advertising campaign for almost a decade.

Between 1913 and 1914 the Coon Rapids hydroelectric dam was constructed with the intent to provide power to Anoka County. The dam was shut down in 1966 after becoming too expensive to operate. It later became part of Minnesota’s environmental control program.

Patented in 1915, the ensilage harvester improved on standard practices for harvesting and storing crops, and streamlined farm work. Its basic design, largely unmodified, is still used by agricultural implement companies worldwide.

In 1878, businessmen Henry A. Bruns and Henry G. Finkle built the first steam-powered grain elevator in the Red River Valley. In its first harvest season, the elevator handled almost 250,000 bushels of wheat from more than 5,000 wagons.

The opening of the Duluth Ship Canal in 1871 was a historical turning point for the city of Duluth and the Twin Ports of Duluth and Superior.