Use this reading to answer the question:

In 1918, the country of Yugoslavia was created. It was made of several ethnic groups including Serbians, Croatians, Slovenians, and others. Discontent was frequent, but this was usually kept under control. In 1991, several of the six republics in Yugoslavia, including Slovenia and Croatia, declared themselves independent.

Nationalism in Yugoslavia had the effect of
(Choose one):

A) developing pride for the country's heritage

B) creating conflicts with other countries

C) dividing the country

D) strengthening the country