Answer:
A person's racial background.
Explanation:
A great example of this are Japanese Americans. After Pearl Harbor, many Americans has irrational fears that Japanese Americans were spies and saboteurs. With these fears and racism, the Us government ordered over 100,000 of these citizens from the West Coast to internment camps. This was done with the previous mentioned factors, plus the fear of an imminent Japanese invasion of the West Coast.
One of the ways in which Santa Anna was a typical caudillo was that as soon as he achieved major military victories he swept into authoritarian power, which was typical.
Your answer would be Imperialism :)