How can nationalism serve as both a positive and negative force within a country? Select one:

Nationalism can improve cross-cultural communication, but often prevents people in a country from forming shared values.

Nationalism can give people in a country a common identity which helps unify them, but it often leads to intense competition with other countries.

Nationalism can lead to greater respect for people of other nations, but can lead a country to surrender easily to foreign invaders.

Nationalism can lead to greater support for the military, but often divides individuals in a country.