Almost all countries have some division of social class (upper, middle, and lower). the determining factor for the assignment to one of these classes may differ from country to country. for example, in the united states, the primary determining factor is occupation; in india, it is birthright; in china, it is geographical region and education; and in singapore, it is income. these differences are best explained in terms of a country's:a. cultural mores. b. beliefs. c. customs. d. religion. e. values.