I'd say something like cultural diffusion, because if he traveled to different places, so might of his customs and clothes. I'm not sure what else though.
The majority of immigrants to America before 1870 were of western European descent, such as the Irish and French, although there were immigrants from all over the world as well.
Answer:
about people who hurt the people around
The conflict in Argentina known as the dirty war occured in the 1970s and 1980s.