Why did the roman empire split in two?
a. the emperor was becoming too old to rule.
b. the emperor wanted to conquer still more countries.
c. the empire was too large for one person to rule.
d. foreign invaders conquered part of the empire.

Most sociologists agree that: a. culture is central in shaping gender roles, but only in preliterate societies. b. biological factors have some influence, but cultural factors are more important determinants of gender roles. c. biological factors are influential in determining gender roles, but only in industrial or complex societies. d. biological factors only explain differences between men and women with regard to aggression and disease. e. there is no difference between the influences of culture or biology on the development of gender roles, as they are unpredictable.