Immigration to the Great Plains region increased mainly as a result of

economic opportunities and the promise of land. The Homestead Act of 1862 encouraged settlement of the Great Plains by offering 160 acres of land to any person who was willing to farm and improve the land. This led to a surge of immigrants, particularly from European countries, seeking a better life and the opportunity to own their own land. Additionally, the expansion of the railroad system made it easier for people to travel to and settle in the Great Plains region. The promise of a better life, economic opportunities, and the availability of land were the main factors that attracted immigrants to the Great Plains in the late 19th and early 20th centuries.