The four greatest waves
105,200-624,400, in the years of 1900-1930. This migration is believed to have occurred because of the terror of Mexican revolution which started November 20th, 1910 , which's end can not be profoundly described. The Immigrants cross by walking the dessert and crossing the Rio Bravo into the nearest states, or places in the border. The immigrants settled in areas that could produce a lot of agriculture. In 1921 the Quota Act was passed it reduced immigration by 3%.