The development of the West between 1870 and 1890 was?

The development of the West between 1870 and 1890 was marked by rapid expansion and transformation, driven largely by the completion of the transcontinental railroad, which facilitated transportation and commerce. This period saw the influx of settlers, spurred by government policies like the Homestead Act, which encouraged westward migration. Additionally, the discovery of gold and other resources led to population booms in various regions, while conflicts with Native American tribes intensified as settlers encroached on their lands. Overall, this era laid the groundwork for the modern American West, characterized by both opportunity and significant social upheaval.