C) populism
For future reference: an easy way to remember the causes is to use the acronym MAIN (as in the MAIN causes) to remember that they are militarism, alliances, imperialism, and nationalism.
Hope this helps :)
Explanation:
Mexifan americans have lower levels of education than non-Hispanic ahites and the immigration legislation of the 1980s has made legal entey to the unoted states generation 1.5 refers to respondents born in mexico and raised in the United states.