Why did cultivating wheat become a main economic activity of the Midwest?

Cultivating wheat became a main economic activity of the Midwest due to the region's favorable climate and fertile soil, particularly the rich loess and mollisol soils ideal for agriculture. The expansion of railroads in the 19th century facilitated the transport of wheat to markets, further boosting production. Additionally, the demand for wheat increased as a staple food source, both domestically and internationally, solidifying its role in the Midwest's economy. This combination of Natural Resources, infrastructure, and market demand established wheat farming as a cornerstone of the region's agricultural identity.