Why did mexicans move to the american southwest in the 1920s?

New Industries in the Southwest of America and the Mexico Revolution was the reason for the Mexican to move in the 1920s.

Explanation:

Starting of new industries in the Southwest of America during the 1890s,  especially in mining and agriculture, attracted Mexican migrant. The Mexican immigrants came from rural areas as labors to work in mining and agricultural fields for stability and employment. The Mexican Revolution increased the flow of Mexican people in America, who were refugees and political exile decamped to America to escape death and violence.  

a best description that resulted a division among labor in the early farming communities in their period was there was a change in their society in terms of having social roles to develop and change that led complications and divisions in the society.