Mexican migration to the U.S. in the early 20th century was driven by political instability, economic hardship, and labor demand. Factors like the Mexican Revolution and U.S. industrialization led to significant population movements, reshaping both countries. Mexican workers faced harsh conditions and exploitation but formed communities that preserved their culture. Their contributions to the U.S. economy were substantial, yet they often encountered discrimination and pressure to assimilate, sparking ongoing debates about immigration and integration.