List three groups that migrated to the west during the late 19th century?

During the late 19th century, three notable groups that migrated to the West included European immigrants seeking land and opportunity, African Americans escaping the oppressive conditions of the South during the Great Migration, and Chinese laborers who came to work on the Transcontinental Railroad and in mining industries. These migrations were driven by a combination of economic prospects, social pressures, and the promise of a better life in the expanding frontier. Each group faced unique challenges and contributed to the cultural and economic development of the western United States.