The correct options are
B Only large countries can have social differences and social divisions.
D A democratic form of government is the cause of social differences and social divisions.
Slobodan Milosevic was the President of Serbia (1989-97) whose nationalist policies led to the disintegration of Yugoslavia.
Any country can have social division because most of the countries are multicultural.
Democracy is the best form of government to deal with social diversity, and people can voice up against any discrimination in a peaceful manner.