Answer:
The early effects of The Great depression on Mexico were directly felt by the mining sector in which the overall export price index fell by 32% from 1929 to 1932. The real value of Mexican exports fell by 75%, output by 21%, and external terms of trade fell by 50% between 1928 and 1932. Beginning around the 1890s, new industries in the U.S. Southwest—especially mining and agriculture—attracted Mexican migrant laborers. The Mexican Revolution (1910-1920) then increased the flow: war refugees and political exiles fled to the United States to escape the violence.
So when it rained the valleys flooded, and that made the lands fertile for planting crops.
Man high school is vary hard
