How did Mexicans help make the south west prosperous in the late 19th century?

In the late 19th century, Mexicans played a crucial role in the economic development of the Southwest United States through their labor in agriculture, mining, and railroads. They contributed significantly to the agricultural sector by cultivating crops like fruits and vegetables in arid regions, which boosted local economies. Additionally, Mexican workers were integral to the construction of railroads, facilitating transportation and trade. Their cultural influence also enriched the region, shaping its social fabric and contributing to its prosperity.