Final answer:
Nationalism can have both positive and negative effects. The correct answer is: Minority cultures were forced to assimilate into a nation's majority culture.
Step-by-step explanation:
The correct answer is: Minority cultures were forced to assimilate into a nation's majority culture. Nationalism can have both positive and negative effects. Positive results of nationalism include: people within a nation overcoming their differences for the common good, the creation of democratic nations, and competition between nations leading to scientific and technological advances.
However, one negative result of nationalism is the forced assimilation of minority cultures into a nation's majority culture. This can lead to the loss of cultural diversity and the suppression of minority voices and rights.