Answer:
It is an exogamic group of blood kin related through the maternal line that recognizes its unity, as reflected in clan names, totemism, and descriptions of the matrilineal clan as “those from one womb” or “one bone.” The matrilineal clan exists among many tribes and peoples at different stages of preclass society, ...
A nickname for Americans are "Yankee's", and in some parts "doughboys". I hope this helps!
Before Spanish colonization, Mexico has established its own class structure among the population. However, after colonization, the class structure changed drastically. The Spanish elites imposed a caste system with different levels of biological mixtures between different ethnic groups living in Mexico which decided one's status in society. Those who were biologically more Spanish enjoy a better standard of life than those from Indigenous or African lineage. The strict hierarchy caused discontent among the people which led to civil unrest and an inevitable revolution.
It would be "B. Bosnia" that is a real "trouble" spot, since although it is much better now, it has suffered years of violence over mostly racial and ethnic tensions.